*787 OPINION
By the Court,
A jury found the appellant guilty of murder in the first degree and fixed his penalty at life in prison without the possibility of parole. In this appeal he contends that the trial court erred by (1) admitting evidence of another offense then refusing to grant a mistrial; (2) failing to suppress evidence obtained in the course of an unlawful search and seizure; (3) admitting his involuntary confession; (4) failing to properly instruct the jury on his state of mind; and (5) admitting into evidence a vial of the victim’s blood when the chain of evidence was defective.
Midafternoon, February 27, 1973, law enforcement officers in Las Vegas, Nevada, received information appellant had been involved in a robbery and shooting and began searching for him. Their search ended several hours later when they found his name on an apartment mailbox and knocked on the apartment door which he answered.
Upon ascertaining his identity, police officers Emmett Davis and Dale Davis stepped into the apartment, made a pat down search of appellant, and then pushed him outside into the custody of a fellow officer. At that moment the officers, from their position at the door of appellant’s apartment, observed an overturned lamp and a large reddish-brown spot appearing to be blood on the carpet and which was partly covered by a throw rug. Upon this observation the officers went through the apartment where they found more blood, bloody clothing and bedding. Shortly thereafter they called for assistance from skilled investigators who made a more thorough search of the premises *788 and gathered articles of evidence including a knife from the kitchen counter.
Later that day appellant was given the “Miranda” 1 warnings by two detectives, and he signed a “rights of persons arrested card” before they questioned him about the large amount of blood found in his apartment. During the interrogation appellant told the two detectives he had at one time been hit by a truck and had blackouts and needed help. They suggested that he would be entitled to have an attorney appointed to represent him and that an application could be made for assistance for mental problems. On February 28, 1973, appellant, after again being advised of his constitutional rights, waiving those rights orally, and signing another “rights of persons arrested card,” confessed to the killing of Annette Morris, whose body containing multiple throat and chest wounds had been discovered February 26, 1973, beneath a pile of trash and rubbish in the desert. The confession was videotaped and later played for the jury during the trial.
1. At the trial, officer Dale Davis testified that on February 27,1973, at about 7:45 p.m.,he arrested appellant on “another incident.” Appellant’s counsel immediately interrupted the testimony and moved for a mistrial. After a hearing outside the presence of the jury, appellant’s motion was denied. The trial judge later offered to admonish the jury and give a limiting instruction, and respondent requested an admonishment, but counsel for appellant indicated that he felt an admonishment would be more prejudicial to his client than the officer’s remark and opposed the request. In light of the record we reject appellant’s contention on appeal that the trial judge was required to sua sponte give the admonishment.
Appellant’s claim that evidence of criminal activity unrelated to the offense charged was erroneously admitted is answered in Founts v. State,
2. The trial court did not commit error in refusing to suppress the physical evidence discovered during the warrantless search of appellant’s apartment and his confession given during a police inquiry.
The Fourth Amendment to the United States Constitution guarantees the individual’s “privacy against arbitrary intrusion by the police.” Wolf v. Colorado,
Here the police officers making a valid arrest in connection with an unrelated matter and being lawfully on the premises observed in “plain view” 2 what they recognized to be a large spot of blood on the apartment floor. The appellant was not bleeding. A wounded person in need of assistance might well have been on the premises. At that moment an emergency situation arose which made an immediate search of the apartment imperative. Not only did the officers have a right to immediately *790 search, but more importantly, a duty and obligation. 3 State v. Hardin, supra. The state had the burden of proving that a war-rantless search and seizure was proper. State v. Hardin, supra. That burden has been adequately met.
When an exigency gives rise to a search it may be carried through to its completion in whatever area law enforcement officers may reasonably expect to find the object of their search.
Having had his interest of privacy in the apartment validly invaded and being in custody elsewhere, appellant cannot recapture that interest by a temporary break in the search between the time the police officers made the initial search and the investigators gathered the articles of evidence.
4
Wimberly v.
*791
Superior Court, County of San Bernardino,
Upon the ground that it was not properly connected to him appellant contends that the knife seized from the counter in his kitchen was improperly admitted into evidence.
5
Items offered in evidence have relevancy and materiality if they are connected with the perpetrator, the victim or the crime. State v. Iddings,
In Alsup v. State,
Here a pathologist testified to the numerous wounds suffered by the victim and indicated that the subject knife was the type of weapon that could have inflicted those wounds. Appellant, in his videotaped confession, admitted stabbing the victim with a boning knife, and a criminalist testified that blood was found on the knife.
Connected to the appellant, the victim and the crime, the knife was properly admitted into evidence by the trial court.
3. Relying on the contention that the detectives promised him psychological help in exchange for his confession to murder, appellant argues that his confession was not freely and vountarily given. The record does not support his contention but does indicate that appellant had been injured some years before in a traffic accident and, by his own testimony, suffered “blackouts.”
If a defendant is mentally capable of understanding the
*792
meaning and consequences of his confession, his mentally disturbed condition does not preclude its admission. Criswell v. State,
4. Appellant next contends there was a possibility that he might have been found guilty in a lesser degree if his proposed instruction on the “state of mind” issue had been given in conjunction with Instruction No. 22, 6 which was given, and as a result the trial court erred in its refusal. We do not agree.
In Fox v. State,
*793 “In presenting these issues to the jury they should be carefully differentiated. Otherwise confusion is bound to result for, at best, confusion is implicit in the situation. It will not do, upon the first issue, to present conflicting and confusing instructions which in effect say that although the defendant had mental capacity to premediate, yet the jury in conscientious judgment may find that he had not such capacity.
“The instruction with which we are here concerned was not a ‘state-of-mind’ instruction, addressing itself to the second issue. Rather, read as a whole, it was a ‘capacity’ instruction. It confined itself to evidence of capacity and invited a reduction of sentence upon the basis of such evidence alone. To say that ‘evidence of insanity * * * may reduce the grade of the offense’ is not a true statement of the law. It is a statement of the doctrine of partial responsibility.. .
In the light of Fox the wording of Instruction No. 22 as given in this case was erroneous in part. It went beyond the “state of mind” issue and advised the jury that an abnormal mental condition not amounting to insanity could not only be considered in determining specific intent but also should be considered for the purpose of determining whether the crime charged or a lesser degree thereof was in fact committed. The latter part of that instruction is a statement of the doctrine of partial responsibility which was specifically rejected by this court in Fox. In spite of the fact that the trial court erred in giving that latter part of Instruction 22, it was harmless to appellant because his position was improperly benefited by that doctrine being available for application to the facts by the jury.
Because the first part of Instruction No. 22 sufficiently instructed on appellant’s “state-of-mind” it was not error to refuse his proposed instruction. Jury instructions should be as clear and understandable as possible and should avoid undue repetition. “It is not error to refuse to give an instruction when the law encompassed therein is substantially covered by another instruction given to the jury.” Collins v. State,
5. Finally appellant claims that State’s Exhibit No. 32, a vial of the victim’s blood, was erroneously received in evidence over his objection because Peter Foote, a mortician, had drawn three (3) vials of blood from the victim and placed them in an evidence envelope, but when State’s Exhibit No. 32 was offered, *794 the other two vials were missing. No contention is made that there is any break in the custody of State’s Exhibit No. 32, but a claim that the exhibit is somehow contaminated by the missing vials because tampering could be inferred and therefore the chain of custody was incomplete. We do not follow that line of reasoning.
The custody of the vial of blood labeled State’s Exhibit No. 32 was accounted for from the time of its extraction through analysis to introduction. Nothing more is required. No prejudice to appellant is claimed and none is found in the record as a result of the missing vials. Cf. People v. Hitch,
In Sorce v. State,
The unaccounted-for vials did not affect the fairness of the trial and therefore did not constitute a denial of due process.
The judgment of the district court is affirmed.
Notes
Miranda v. Arizona,
Plain view alone is not enough, there must be exigent circumstances to justify a warrantless entry and seizure, and the discovery must be inadvertent. Coolidge v. New Hampshire,
In State v. Hardin, supra, we quoted with approval from E. Mascolo, The Emergency Doctrine Exception to the Warrant Requirement Under the Fourth Amendment, 22 Buff.L.Rev. 419, 426-427 (1973):
“Law enforcement officers may enter private premises without either an arrest or a search warrant to preserve life or property, to render first aid and assistance, or to conduct a general inquiry into an unsolved crime, provided they have reasonable grounds to believe that there is an urgent need for such assistance and protective action, or to promptly launch a criminal investigation involving a substantial threat of imminent danger to either life, health, or property, and provided, further, that they do not enter with an accompanying intent to either arrest or search. If, while on the premises, they inadvertently discover incriminating evidence in plain view, or as a result of some activity on their part that bears a material relevance to the initial purpose for their entry, they may lawfully seize it without a warrant.”
Compare Scott v. State,
For the first time, during argument on this appeal appellant has claimed the knife should have been suppressed as evidence because it was not seized by the police officers making the initial search of his apartment, but by an investigator making a later search. This contention is met by our holding, supra, that a search validly commenced may be reasonably carried through to its conclusion.
Instruction No. 22, as given, reads: “Evidence of an abnormal mental condition not amounting to insanity which tends to prove that the defendant did not, in fact, entertain the specific intent or state of mind at the time of the act, which is by definition a requisite element of the crime charged, should be considered for the purpose of determining whether the crime charged or a lesser degree thereof was, in fact, committed.”
