In this сriminal action, we granted the State’s application for discretionary review of the trial court’s pretrial ruling suppressing defendant’s oral confession and the fruits of a warrant search resulting from those statements. The State concedes that it has the burden to shоw the statements were voluntarily made. It disputes the trial court’s ruling that it must also show that *787 the statements were knowingly and intelligently made. As we agree with the State’s position, we reverse and remand.
Defendant challenges the confession and the evidence seized on cоnstitutional grounds. Since the issue involves a constitutional right, we review the record de novo.
State v. Aldape,
On February 2, 1988, defendant George Davis told a deputy sheriff at the Tama County Courthouse that the gun used by his brother-in-law, who was under arrest for terrorism, was his and that he wanted it back. The deputy subsequently learned that Davis was a convicted felon whose right to have firearms had not been restored. He then asked another deputy sheriff to first read Davis his Miranda rights and then to interview him regarding the gun and to tape-record their conversation. The approximately twenty-minute interview occurred at Davis’ home. Davis signed a written Miranda waiver form. During the course of this interview, Davis told the deputy sheriff that he owned the 12 gauge shotgun used in his brother-in-law’s case and that he had additional firearms in his possession as well. Davis then volunteered to show the deputy a 410 gauge shotgun.
This information was used to obtain a search warrant, and the firearms were subsequently seized. Davis was then charged with two counts of possession of firearms by a felon.
Defendant moved to suppress the tape-recorded conversation and all the items of physical evidence seized as a result of that conversation. The trial court adopted a two-step test of admissibility of defendant’s statements by requiring that they must not only be voluntary but knowingly and intelligently made. The court cited Davis’ poor education, the technical nature of the crime with which he was eventually charged, and the fact that he was not told that he was suspected of criminal activity as support for its conclusion that the State had not established that the statements were knowingly and intelligently made. It is the State’s position thаt the statements need only be voluntary. It urges that an analysis of “knowledge” and “intelligence” is only required in determining the validity of a waiver of Miranda rights. With these contentions in mind, we examine principles concerning the admissibility of inculpatory statements by a criminal defendant.
I.
Admissibility of Inculpatory Statements.
For ovеr a century this court has recognized that the admissibility of inculpa-tory statements by an accused is dependent upon the State showing that the statements were voluntarily made.
State v. Chambers,
More recently, constitutional concerns enterеd into our decisions involving volun-tariness. The U.S. Supreme Court held that a confession obtained by police through the use of threats is violative of due process.
Lynumn v. Illinois,
The Supreme Court placed new burdens upon the State in seeking the admission of inculpatory statements in
Miranda v. Arizona,
The teaching of these cases indicates that since Miranda, we have a dual test in determining the admissibility of in-culpatory statements by a criminal defendant. First, we ascertain whether or not Miranda warnings are required and if so, whether they were properly given. Second, we determine whether the statement is voluntary and satisfies due process.
II.
Miranda Warnings.
In
Miranda
the Supreme Court mandated that during custodial interrogation, an accused be advised of certain constitutional rights.
A
Miranda
inquiry is not triggered, howevеr, unless there is both custody and interrogation.
Id.; see, e.g., State v. Brown,
On the record before us, we find thаt Davis was not in custody while he was interrogated by the deputy sheriff. The atmosphere during the defendant’s interview was not coercive or threatening nor was his freedom restrained. In fact, the trial court found that the atmosphere was “most pleasant.” He was not deprived of his freedom in any way. He was not placed under arrest and was interviewed in his home. While he was a suspect, this status does not trigger the requirement of
Miranda
warnings.
Oregon v. Mathiason,
III.
Voluntariness.
Our second inquiry addresses the issue of voluntariness. In prior cases we have noted the difference between voluntary waivers of
Miranda
rights and voluntary statements.
State v. Hodges,
Even if there had been the need to effectively waive defendant’s
Miranda
rights, the State must still prove that the accused's subsequent incriminatory statements were voluntarily given.
Hilpipre,
*789
The district court held, however, that in order for a statement to be admissible, it must not only be voluntary, but knowingly and intelligently made. The defendant cites
State v. Jacoby,
With the sole exception of Jacoby, which concerned a challenge to the constitutionality of an admission based upon the defendant’s emotional distress at the time, the other eases involved a claim by the defendant that he lacked the intelligence to knowingly and voluntarily confess. These are situations where the question of whether an admission was made knowingly becomes an integral part of the issue of vol-untariness and becomes subsumed by it. We stated in Holderness:
Mental subnormality does not itself deprive the confession of voluntariness or bar its admission in evidence, so long as the subnormality does not deprive the person in question of the capacity to understand the meaning and effect of the confession.
Id. at 739.
In its ruling the trial court relied heavily upon its determination that defendant reasonably believed that he was not under criminal investigatiоn. Even if true, his ignorance or misconception as to his circumstances do not mar the voluntariness of his statements. The Supreme Court has stated that it has never “embraced the theory that a defendant’s ignorance of the full consequences of his decisions vitiates their voluntariness.”
Elstad,
The State contends that there is no evidence in the record to support a claim that defendant’s statements to the deputy sheriff were not voluntary. We examine the totality of the circumstances to determine whether the statements were thе product of a free and unconstrained choice.
Snethen,
No one factor is determinative of the voluntarinеss of an admission.
Hodges,
The State contends that there is absolutely no evidence in the record of any dishonesty, deception or trickery on the part of the law enforcement officer in conducting the interview with the defendant. The defendant, on the other hand, asserts that the deputy sheriff’s lack of candor in responding to the defendant’s question
*790
about the reason for the
Miranda
warning is evidence of deception. While the deputy sheriff may have had a dual motive in questioning the defendаnt, no charges had been filed against Davis for any kind of criminal conduct at that time. In addition, the deputy did not make the defendant any promises as to what would happen if he did or did not talk to him. He did not tell Davis whether or not he would file charges depending upon if he talked to him. When the defendant asked the deputy if he was under arrest, the deputy truthfully replied that he was not. This is to be distinguished from the situation in
Cooper,
In
State v. Boren,
The defendant asserts that he could have been improperly influenced to answer the questions of the deputy by the belief that he could have gotten his shotgun returned to him. However, there is nothing in the record to suggest that the deputy did anything to encourage this belief. In fact, when the defendаnt told the other deputy sheriff in the Tama County Courthouse that he wanted his 12 gauge shotgun back, he was told that it would have to be held for evidence. Defendant volunteered to show the deputy who interviewed him his 410 gauge shotgun. Absent coercion, spontaneous statements voluntеered by a defendant are admissible even when
Miranda
warnings are required but not given.
State v. Youngbear,
At most, the deputy sheriff’s remarks were ambiguous and noncommittal. He did not affirmatively mislead Davis as to the possible consequences of his admissions. In
Agee v. White,
An examination of the other factors which bear on the issue of voluntariness demonstrate that the defendant made his statements to the deputy sheriff without coercion. While the defendant may not be able to read or write well, thеre is no indication in the record that he had any trouble understanding any of the questions that the deputy sheriff asked. His statements were not reduced to writing at that time. There is no evidence in the record that the defendant was mentally subnormal. While the defendant may well have bеen tired after working until after 11 p.m., he was only interviewed for approximately twenty minutes in his own home. No physical punishment was used. The deputy did not make use of any known mental weaknesses that the defendant may have possessed. Therefore, in reviewing the totality of thе circumstances, we find that the statements made by the defendant to the deputy sheriff were voluntary.
In conclusion, we find that defendant’s statements to the deputy sheriff were made voluntarily and free from coercion. They can be used to establish probable cause to obtain a search warrant. Iowa R.Crim.P. 11.1(d). The statements and all the physical evidence seized as a result of that search are therefore admissible at trial. Iowa R.Crim.P. 11.1(e).
*791 IV. Disposition. In summary, we hold that defendant George H. Davis’ oral statements on February 2, 1988 are admissible in evidence. We further hold that such statements establish probable cause to obtain a search warrant. We reverse the trial court’s holding to the contrary.
REVERSED AND REMANDED.
