Eugene T. Butler appeals his conviction for second degree assault. Butler was accused of stabbing Ronald McCart in the shoulder with a steak knife during a fistfight McCart initiated after Butler accosted McCart’s wife, Angie, at a party. Because the trial court erred in its jury instruction concerning self-defense and provocation, we reverse, and remand for a new trial.
FACTUAL BACKGROUND
An annual party called the Blues Festival was held at a cabin at Thomas Lakes in Saunders County, Nebraska, on August 7, 1999. The party attracted as many as 100 people at some time during that day. Butler and a group of friends drove from Omaha to attend the party. McCart and Angie drove from their home in Kansas City, Missouri, to attend the festival with several of their friends who resided at the lake.
That evening, Angie and Jennifer Jones were behind the cabin listening to the band when one of Butler’s friends approached them and asked Angie if she would like to meet one of his friends. Angie demurred, and the man left. But about 15 minutes later, he returned with Butler. There is a dispute as to what was said, but the women claim Butler made inappropriate comments and suggestions to Angie, while Butler’s friend claims Butler simply spoke to the women in a cordial manner. Angie told McCart about this interaction, and McCart told Butler’s friend to quit making *539 “advances” toward and talking to Angie. Butler apparently was not present when McCart spoke to Butler’s friend.
Shortly after Angie’s brief interaction with Butler, she and Jones decided to leave the party. They walked around the side of the cabin toward their car, which was parked on the adjacent road. The women said that they saw someone in the bushes next to the road and determined that it was Butler. The women allege that after Angie asked him to leave her alone, Butler emerged from the bushes, shouted obscenities at Angie, and threw beer on her. They stated that when Angie threw the beer container back at Butler, he shoved her to the ground. The women said they escaped when a man emerged from the side of the cabin and challenged Butler’s treatment of them. The women ran back to the cabin in order to find McCart and Jones’ boyfriend. Butler retreated, after being chased by a group of men including McCart, to Butler’s uncle’s cabin, which was next door to the cabin where the festival was held. McCart went to his car, removed his sandals, and put on a pair of boots.
While in his uncle’s cabin, Butler picked up a steak knife and put it in his pocket. After about 15 minutes had passed, Butler left his uncle’s cabin and began to walk across the property toward picnic tables located on the edge of his uncle’s lot. At about the property line separating the two lots, McCart tackled Butler from the side. McCart was on top of Butler punching him in the face when Butler stabbed McCart. in the side of his shoulder. McCart retreated to a cabin on the other side of the lake, where his wound was dressed. Butler went to his uncle’s cabin to call the police.
When Deputy Sheriff Eric Hummel arrived at Butler’s uncle’s lot, Butler met him in the yard. As Butler reported the beating he had received from McCart, Marc Snyder yelled from a crowd of about 20 to 30 people still gathered at the festival that Butler had stabbed McCart with a knife. Deputy Hummel told Butler to wait there for him while he went to call for “backup.” When Deputy Hummel returned, he asked Butler to continue his statement. Butler said that he took a knife from his uncle’s cabin and that he stabbed McCart in self-defense during their fight. Deputy Hummel arrested Butler for second degree assault, handcuffed him, and placed him in the back of his patrol car.
*540 Several deputies arrived at the scene. Deputy Hummel directed one of them to search the area for the knife used in the assault. Deputy Hummel approached the patrol car and asked Butler about the location of the knife, which Butler described as having a wood or black plastic handle. At no time did Deputy Hummel give Miranda warnings to Butler. The deputy assigned to search the area found a black-handled steak knife with the blade stuck in the space between the slats of a picnic table located near the property line on Butler’s uncle’s lot. There were no visible traces of blood on the knife, and it is not known whether this knife was used to stab McCart. However, the deputy also found bloodstains on the grass within a few feet of the picnic table. Deputy Hummel had sent two other deputies to the cabin where McCart was receiving treatment to interview him and other witnesses to the evening’s events. One of the deputies radioed Deputy Hummel to report their findings, and Deputy Hummel instructed them to issue a citation charging McCart with third degree assault. Snyder’s wife drove McCart to a hospital for treatment of his wound. McCart later pled guilty to a reduced charge of disturbing the peace.
PROCEDURAL BACKGROUND
The State filed a complaint against Butler in Saunders County Court on August 10, 1999, charging him with second degree assault, a Class IIIA felony. The county court held a preliminary hearing September 29. In its preliminary hearing order of the same date, the court bound Butler over to the district court. On October 1, the State filed an information against Butler in the district court for Saunders County charging him with second degree assault.
Three days later, Butler filed a motion to suppress all statements he made to all officers of the State because the statements were not freely and voluntarily given and because he made them without being informed of his constitutional rights. Testimony at the suppression hearing was that Butler told Deputy Hummel he stabbed McCart in self-defense and gave a description of the knife he used and that after he was formally arrested and handcuffed, he made statements regarding the knife’s location. The court overruled the motion to suppress in a journal entry filed March 1, 2000, finding that Butler was not in custody when *541 Deputy Hummel instructed him to remain where he was after Snyder volunteered from the crowd that Butler stabbed McCart. The court wrote: “There can be no reasonable inference of ‘custody’ ... drawn from the circumstances wherein an officer says ‘wait here’ and then leaves to interview another person.” The court also found that preliminary crime scene investigation does not constitute custodial interrogation.
Butler filed a supplemental motion for discovery, specifically requesting the right to depose Snyder. The district court overruled this motion in a journal entry filed March 20, 2000. Butler filed a motion in limine. He requested that the court prohibit the State from making statements, introducing evidence or witnesses, or asking any questions in the jury’s presence regarding the steak knife taken at the scene. A hearing on the motion was held May 1. The court sustained Butler’s motion with respect to this issue, thereby prohibiting use of the knife in the State’s case in chief, unless the defense first raised the subject. The court memorialized its ruling in a journal entry that day.
On May 8, 2000, Butler filed a motion to dismiss the complaint and information against him because he was not granted a speedy trial. In a journal entry filed May 9, the district court overruled this motion, finding that “a minimum of 64 days remain in which defendant can be brought to trial.”
Trial was held on May 9, 2000. McCart was not present to testify, nor was his deposition of December 29,1999, placed in evidence. Snyder testified for the State. He said that he saw several people chasing Butler away from the party. He also said that when Angie told McCart that Butler threw beer on her and shoved her to the ground, McCart went looking for Butler. Snyder testified that he saw the fight between Butler and McCart, including the stabbing, and that he informed Deputy Hummel of the stabbing during the deputy’s conversation with Butler.
One of Butler’s friends testified that after the fight, he picked up the steak knife Butler used to stab McCart and placed it in the kitchen sink in Butler’s uncle’s cabin. The deputy who found a steak knife on the picnic table testified that while searching for a weapon, he found a “weapon,” which he took into evidence. Butler objected to further questioning on this matter, relying upon the court’s previous ruling on his motion in limine. At a *542 conference outside the jury’s presence, the trial court determined that the testimony revealed that Butler armed himself with a steak knife, that a witness viewed the stabbing, and that McCart had been wounded. The court found that it was not unduly prejudicial to Butler for the State to elicit testimony that a steak knife was found near the location of the stabbing. However, the trial court would not allow that knife to be placed in evidence. Nonetheless, the court did allow into evidence a photograph of the steak knife lying on the picnic table where a deputy found it.
At the end of the State’s case in chief, Butler moved to dismiss the case on the ground of insufficient evidence. In arguing this point, he cited McCart’s failure to testify. The trial court overruled this motion. The trial continued on May 10, 2000. At the close of evidence, the court again overruled Butler’s motion to dismiss, made on the ground that if Butler did stab McCart, he did so in self-defense. In response to Butler’s argument, the trial judge stated that “we have a real question as to whether or not the force that was used in response to the force that was used in the attack, we have that question of reasonableness, whether it was reasonable for the defendant to use a knife in response to the attack.”
At the jury instruction conference, Butler’s counsel submitted proposed jury instruction No. 8, addressing the issue of self-defense. In tendering the final jury instructions, the trial court noted that it refused Butler’s proposed instruction because the evidence showed that the court should include the “deadly force self-defense instruction.” This instruction allowed the jury to consider Butler’s provocation of McCart.
On May 10, 2000, the jury returned a verdict finding Butler guilty of second degree assault. The trial court ordered a presentence investigation, and McCart’s deposition was included in the presentence investigation report. Butler filed a motion for new trial, and a hearing on the motion was held July 31. The motion for new trial was overruled on August 1. While such a motion is fraught with procedural dangers, see
State
v.
Nash,
*543 ASSIGNMENTS OF ERROR
Butler assigns, restated and reordered, that the trial court erred in failing to (1) suppress a statement he made to law enforcement officers; (2) grant his motion for supplemental discovery; (3) keep certain physical evidence and testimony, to which Butler objected, out of evidence; (4) dismiss the case under the speedy trial statute; (5) dismiss the case at the end of the State’s case in chief and at the close of evidence because the State failed to produce all “ ‘Res Jestae [sic] Witnesses’ ”; and (6) properly instruct the jury.
Butler also alleges that the judgment and verdict are not sustained by the evidence and are contrary to law, and he assigns error to the court’s failure to sustain his motion for new trial. However, Butler did not argue these two assignments of error. Errors that are assigned but not argued will not be addressed by an appellate court,
State
v.
Baue,
STANDARD OF REVIEW
The standard of review applicable to a particular assignment of error will be set forth in the discussion of that assignment.
ANALYSIS
Motion to Suppress Statement.
Butler argues that he was in custody when he made statements to Deputy Hummel without the benefit of being advised of his Fifth Amendment rights under
Miranda v. Arizona,
In reviewing a motion to suppress statements to determine whether an individual was “in custody” for purposes of
Miranda,
findings of fact as to the circumstances surrounding the interrogation are reviewed for clear error, and the determination of whether a reasonable person would have felt that he or she was or was not at liberty to terminate the interrogation and leave is reviewed de novo.
State v. Burdette,
The U.S. Supreme Court held in Miranda[, supra], that in order to safeguard the uncounseled individual’s Fifth *544 Amendment privilege against self-incrimination, suspects interrogated while in police custody must be told that they have the right to remain silent, that anything they say may be used against them in court, and that they are entitled to the presence of an attorney, either retained or appointed, at the interrogation.
The
Burdette
court also recognized that the U.S. Supreme Court in
Thompson
v.
Keohane,
Butler claims that the totality of the circumstances indicate that he was not free to leave the scene after Deputy Hummel heard Snyder say that Butler had stabbed McCart, because Deputy Hummel told Butler to wait on his uncle’s lot until Deputy Hummel called for officer support. Under
Thompson
v.
Keohane, supra,
our first inquiry when determining whether Butler was in custody when he admitted to Deputy Hummel that he stabbed McCart is examining the circumstances, including determining whether an interrogation occurred. Deputy Hummel testified that after he called for backup, he returned to where Butler was waiting for him and asked Butler to continue telling him what happened. At that time, Butler admitted to stabbing McCart, but said he did it in self-defense. “ ‘ “[T]he
Miranda
safeguards come into play whenever a person in custody is subjected to either express questioning or its functional equivalent. . . .” ’ ”
State
v.
Melton,
Deputy Hummel and Butler testified at the suppression hearing that in their own minds, Butler was not then free to leave the scene. However, it is not what is in the minds of the suspect or the officers which is determinative, but, as we said above, whether a reasonable person would have felt at liberty to leave. Deputy Hummel also testified that he did not threaten, deceive, coerce, show his weapon, or arrest Butler, which would, of course, affect Butler’s perception of the situation — as well as the “reasonable person’s” perception.
In
State
v.
Burdette,
The trial court found that there could be no reasonable inference of custody drawn from Deputy Hummel saying “wait here” to Butler. The court also found that Deputy Hummel was conducting a preliminary crime scene investigation, not a custodial interrogation, when he spoke to Butler. The Nebraska Supreme Court has said that
Miranda
procedures are not meant to preclude law enforcement personnel from performing their traditional investigatory functions, such as general on-the-scene questioning as to the facts surrounding a crime or other general questioning of citizens in the factfinding process.
State
v.
Bennett,
However, Butler argues that once Deputy Hummel learned of the stabbing, he should have advised Butler of his
Miranda
rights because Deputy Hummel should have known that continuing to talk with Butler would likely force him to make an incriminating statement. Butler contends that he was “prodded” into making a statement regarding self-defense by Deputy Hummel’s action of stopping the interrogation, calling for “backup,” and only continuing the questioning after Snyder’s statement that Butler stabbed McCart. Brief for appellant at 16. We take Butler’s claim to be that his admission to Deputy Hummel was not voluntary. Whether a statement is voluntary or the result of State coercion or promise is a question of fact.
State
v.
Garza,
Motion for Supplemental Discovery.
Butler argues that the trial court abused its discretion in refusing to allow him to depose Snyder because Snyder was the State’s chief witness and only “Res Jestae [sic] Witness.” We separately address the issue of res gestae witnesses later in our opinion.
Unless granted as a matter of right under the Constitution or other law, discovery is within the discretion of a trial court, whose ruling will be upheld on appeal unless the trial court has abused its discretion in the discovery ruling.
State
v.
*547
Tuttle,
Butler failed to explain in his motion for supplemental discovery why deposing Snyder would produce material and relevant evidence, and thus, the trial court did not abuse its discretion in overruling his motion. We further note that although a hearing on this motion took place, and Butler may have presented his reasons for deposing Snyder at that hearing, those proceedings are not in the bill of exceptions. It is incumbent upon the party appealing to present a record which supports the errors assigned.
Sindelar v. Hanel Oil, Inc.,
Admission of Evidence/Testimony Regarding Knife.
Butler argues that the trial court improperly allowed a picture of a knife found near the stabbing scene to be entered into evidence when the knife itself had been excluded after a hearing on Butler’s motion in limine. Butler asserts that the photograph of a knife that the State did not allege was the knife Butler used to stab McCart was not relevant to the case and that its admission into evidence prejudiced him.
*548
Relevant evidence means evidence having any tendency to make the existence of any fact that is of consequence to the determination of the action more probable or less probable than it would be without the evidence. Neb. Rev. Stat. § 27-401 (Reissue 1995). A photograph is admissible in evidence if the subject matter or contents are accurately depicted at a time pertinent to the inquiry and the photograph has probative value as relevant evidence.
State
v.
Merrill,
In a jury trial of a criminal case, an erroneous evidential ruling results in prejudice to a defendant unless the State demonstrates that the error was harmless beyond a reasonable doubt.
State
v.
Baue,
Trial testimony and evidence established rather overwhelmingly that Butler stabbed McCart. No one testified that this was not how McCart received his wound. Butler’s friend testified that he saw Butler leave his uncle’s cabin with a steak knife immediately before he was tackled by McCart, and another friend said he saw Butler “pull out” the knife during the fight. Snyder saw Butler stab McCart and testified that when McCart got up and walked away from the fight, he said, “ ‘The son of a bitch stabbed me.’ ” One of Butler’s friends testified that after the fight, he picked up the knife and placed it in the kitchen sink in Butler’s uncle’s cabin. Photographs of McCart’s stab wound were admitted into evidence, and the deputy who took the photographs testified that the wound was about 1 inch wide and between 1 and 2 inches deep. And, of course, Butler admitted stabbing McCart in self-defense when he spoke to Deputy Hummel, evidence which we have already found to have been properly admitted. Which particular knife was used in the stabbing is not of great consequence. Therefore, while admitting into evidence a picture of a steak knife not alleged to be the knife Butler used to stab McCart was error, it did not materially *549 influence the jury to render a guilty verdict on the charge of second degree assault. The error was harmless.
Speedy Trial Statute.
Butler argues that because after a September 29, 1999, preliminary hearing he was bound over to district court and trial was not held until 8 months later, the case should have been dismissed because he was not given a speedy trial. Ordinarily, a trial court’s determination as to whether charges should be dismissed on speedy trial grounds is a factual question which will be affirmed on appeal unless clearly erroneous.
State
v.
Baird,
Every person indicted or informed against for any offense shall be brought to trial within 6 months, and such time shall be computed as provided by Neb. Rev. Stat. § 29-1207 (Reissue 1995). The denial of a motion to discharge on speedy trial grounds affects a substantial right and, thus, is a final, appealable order.
State
v.
Meese, supra.
See,
State
v.
Jacques,
In Jacques, the trial court overruled Jacques’ motion to discharge upon speedy trial grounds. The case proceeded to trial. Jacques failed to appeal the court’s denial of his motion until after his conviction, more than 30 days after the trial court’s order overruling his motion to discharge. The Nebraska Supreme Court held that this court correctly decided that we lacked jurisdiction to address Jacques’ speedy trial claim because it was not timely appealed. Here, Butler’s motion to dismiss for lack of a speedy trial was overruled by the trial court in a May 9,2000, hearing and memorialized in a journal entry of the same date. Trial proceeded *550 on May 9, and the jury returned a guilty verdict on May 10. However, Butler did not appeal the denial of his motion to dismiss within 30 days of May 9. Therefore, we do not have jurisdiction to review Butler’s speedy trial claim or his claim that the trial court’s findings on the motion were inadequate.
Res Gestae Witnesses (Sufficiency of Evidence).
Butler argues that because the Nebraska Supreme Court requires the State to produce all “Res Jestae [sic] Witnesses” at a criminal trial, the State violated the Confrontation Clause of the Sixth Amendment by not producing McCart at trial, offering no explanation for his absence and not issuing a subpoena for him. Therefore, Butler submits that this case should have been dismissed at the close of the State’s case in chief or at the close of all evidence. Butler also contends that because McCart did not testify, a qualified medical expert had to testify that McCart was stabbed.
A res gestae witness is one who, having been at the scene of an incident, can give a firsthand account of what happened. Black’s Law Dictionary 1597 (7th ed. 1999). While Butler relies on cases from Michigan to support his argument that all res gestae witnesses must be called by the prosecution to testify, we apply Nebraska law. Nebraska cases decided within the past 10 years refer almost exclusively to res gestae with respect to the admissibility of evidence, particularly excited utterances, see
State
v.
Sanchez-Lahora, 9
Neb. App. 621,
The only Nebraska case Butler cites to support his argument is
Johnson
v.
State,
We find that to the extent that
Johnson
has any application, it is only for the proposition that the evidence, properly admitted, must be sufficient to sustain the conviction. Accordingly, McCart need not have testified because there was sufficient evidence, recounted earlier in this opinion, to establish the “res gestae.” Butler’s arguments about the evidence — produced and not produced — are resolved in the context of our well-established rules for appellate review of the sufficiency of the evidence. See
State v. Rieger,
We do, however, address Butler’s insistence that
State
v.
Sheets,
Jury Instructions/Self-Defense/Provocation.
Butler argues that the trial court improperly instructed the jury about self-defense by allowing the jury to consider Butler’s provocation of McCart, when the evidence did not show provocation. Whether a jury instruction given by a trial court is correct is a question of law.
Smith
v.
Fire Ins. Exch. of Los Angeles,
Provocation is usually discussed in Nebraska case law with respect to mitigating what could be a murder conviction to the lesser offense of manslaughter. See, Neb. Rev. Stat. §§ 28-303(1) and 28-305 (Reissue 1995);
State
v.
Lyle,
Neb. Rev. Stat. § 28-1409(4)(a) (Reissue 1995) states that the use of deadly force in self-defense is not justifiable if “[t]he actor, with the purpose of causing death or serious bodily harm, provoked the use of force against himself in the same encounter.” Nebraska is among only a handful of states whose self-defense statute denies the defense if the defendant provokes the victim with the intent to purposely cause death or serious bodily harm to the victim in the same encounter. See, Del. Code Ann. tit. 11, § 464(e)(1) (1995); Me. Rev. Stat. Ann. tit. 17-A, § 108 (West 1999); N.H. Rev. Stat. Ann. § 627:4 (1996); N.J. Stat. Ann. § 2C:3-4 (West 2001); 18 Pa. Cons. Stat. Ann. § 505(b)(2)(I) (West 1998). To date, Nebraska appellate courts have not analyzed § 28-1409(4)(a), but New Jersey and Pennsylvania courts have interpreted the same language in their statutes.
In
State v. Bryant,
In
Commonwealth
v.
Samuel, 521
Pa. 298,
On the evidential record before us, even assuming that Butler’s actions toward Angie constitute provocation of McCart, the State failed to show that Butler behaved in this manner to provoke McCart into a fight, with the intent of causing McCart’s death or serious bodily harm. In short, there is no evidence, absent the wildest speculation, that Butler accosted Angie with the purpose that McCart would be provoked so that Butler could use deadly force to seriously injure or kill McCart. As is apparent from review of the foregoing sentence, exclusion of self-defense by provocation under § 28-1409(4)(a) requires a complex chain of reasoning and behavior by Butler to the effect of “I will do these foul things to Angie so that her husband will attack me so I can then kill or injure him.” Given the absence of evidence that Butler or McCart even knew each other, or had previous troubles, coupled with Butler’s retreat to the safety of his uncle’s property, there is no evidentiary support for allowing the jury to deny Butler the defense of self-defense because of provocation. In short, there was no evidence of that requisite intent on Butler’s part.
Additionally, the language of § 28-1409(4)(a) and the facts of this case require that we consider the meaning of the words “in the same encounter.” The Pennsylvania Supreme Court in
Commonwealth
v.
Samuel,
Here, Butler retreated to his uncle’s cabin after a group of men, including McCart, chased him from the festival after his second encounter with Angie. Fifteen minutes later, when he left his uncle’s cabin and approached the picnic table located on the edge of his uncle’s lot, Butler was tackled by McCart. Because of *556 this undisputed gap in space and time (during which McCart went to his car to put on a pair of boots and then hunted up Butler on the lot owned by Butler’s uncle), there is no evidence that the fight started by McCart’s tackling Butler was part of “the same encounter” as when Butler earlier accosted Angie. In short, the record fails to contain evidence that any provocation of McCart by Butler occurred in the “same encounter” which is a necessary prerequisite to the concept of denial of self-defense by provocation. And, as in Samuel, McCart clearly became the aggressor.
Lesser-included Offenses.
Butler also assigns error to the trial court’s refusal to instruct the jury on attempted second degree assault or third degree assault. Butler claims that the court ruled that if Butler requested a self-defense instruction, that it could not instruct the jury on these lesser offenses. However, the bill of exceptions shows that the court did not say this. Moreover, the record shows that Butler never objected to the court’s instruction on second degree assault and never requested an instruction on lesser offenses. Failure to timely object to jury instructions prohibits a party from contending on appeal that the instructions were erroneous.
State
v.
Myers,
Retrial.
Upon finding error in a criminal trial, the reviewing court must determine whether the evidence presented by the State was sufficient to sustain the conviction before the cause is remanded for a new trial.
State
v.
Anderson,
CONCLUSION
The trial court did not abuse its discretion in overruling Butler’s motions to suppress and for supplemental discovery. The speedy trial claim was not properly presented for appellate review. The trial court erred in admitting the photograph of a steak knife which the State did not prove or even contend that Butler used to stab McCart. However, it was harmless error.
The trial court committed reversible error in giving its jury instruction No. 9 on the defense of self-defense by including therein provocation. Because sufficient evidence was adduced to support the guilty verdict, the principles of double jeopardy do not prevent a new trial, which we hereby order.
Reversed and remanded for a new trial.
