*573 OPINION
Appellant Philip Alexander Tomarchio, Jr. was convicted of *574 first-degree murder after a jury trial, and sentenced to life imprisonment without the possibility of parole. The district court erred, however, in finding that appellant did not request an attorney prior to being questioned by police, and in applying an erroneous standard of reviеw in determining whether appellant’s confession was voluntary. Further, the prosecution improperly attempted to impeach a key defense witness with an undocumented prior conviction. As we find the evidence of appellant’s guilt overwhelming, we decline to reverse his first-degree murder conviction. However, we believe the asserted errors prejudiced appellant during the penalty phase of his trial. Accordingly, we affirm appellant’s conviction, but remand the case for a new penalty hearing.
Appеllant’s involvement in the crime which resulted in this appeal does not appear to be in dispute. In opening argument at trial, defense counsel conceded that appellant shot and killed Corrections Officer James Harbin in the course of an attemptеd armed robbery in Las Vegas.
APPELLANT’S CONFESSION
Appellant argues the district court erred in denying a motion to suppress a confession and physical evidence obtained as the fruits of that confession. This issue arises out of the following series of events. The day after the murder, appellant and his “common law wife,” Kathleen Reavy, were taken into custody by Las Vegas police. At the time of his arrest, appellant was advised of his Miranda rights and informed he was to be charged with murder. Appellant responded, “Well, I better have a lawyer if I’m going to be chаrged with murder.” Detective McGuckin, the arresting officer, later testified at an evidence suppression hearing that at that time he interpreted appellant’s response as “to the effect that he didn’t want to speak to me until he spoke with an attorney.” The dеtective noted the apparent refusal on a “rights card” he used to read appellant his rights; the notation on the card read, “REFUSES TO MAKE STATEMENT W/O PRESENCE OF AN ATTY.”
Appellant was subsequently transported to the Las Vegas jail. Later that evening, appellant asked a police officer if Reavy was going to be arrested. The officer declined to answer, and told appellant he would have to speak to Detective McGuckin. At appellant’s request, the detective met with appellant the next morning. At this meeting, McGuckin again advised appellant of his Miranda rights, and a discussion ensued between appellant and the detective concerning whether Kathleen Reavy was to be arrested and charged with murder. What transpired in the course of this discussion is disputed. *575 Appellant testified, and the district court found, that whеn appellant sought to bargain for Reavy’s release in return for his confession, McGuckin picked up a telephone and said to someone at the other end, “Order Kathleen Reavy’s release.” Appellant, who was unaware that Reavy had been released the night before, claimed to have been deceived by this ruse. He eventually made a complete videotaped confession, which led to the recovery of the murder weapon and related physical evidence.
Appellant sought to suppress the confession and physical evidence on the grounds that the detective’s ruse violated his Fifth Amendment rights. The district court denied the motion, finding that appellant had not requested an attorney and that, under a “totality of the circumstances” test, appellаnt’s confession was voluntary. In so doing, we believe the district court erred.
Initially, we take issue with the district court’s finding that appellant did not request an attorney prior to being questioned by police. Such a determination is a finding of fact, which should not be disturbed on appeаl if supported by substantial evidence.
See
Brimmage v. State,
As appellant initially requested counsel, the issue becomes whether the district court applied the correct standard of review in determining whether appellant’s confession was voluntary. The district court applied a “totality of the circumstances” test, citing Schneckloth v. Bustamonte,
The “totality of the circumstances” test may be relevant to a discussion of whether a defendant’s confession is voluntary
*576
under due process standards.
See
Mincey v. Arizona,
As appellant initially requеsted counsel, the district court erred in applying a “totality of the circumstances” test in determining whether appellant knowingly and intelligently waived his rights. Further, although the State urges the district court nonetheless applied the correct standard of review because аppellant “voluntarily” contacted Detective McGuckin to discuss the possible prosecution of Reavy, we do not believe that this, standing alone, is sufficient to show that appellant was outside the protections afforded by
Miranda.
While the requirements of
Miranda
governing custodial interrogation do not apply to volunteered utterances
(see
Varner v. State,
Thus, the distriсt court erred in admitting appellant’s confession and related physical evidence without determining whether appellant knowingly and intelligently waived his Miranda rights.
IMPROPER IMPEACHMENT
The second major issue presented concerns the prosecution’s attempt to impeach a defense witness with a purported prior felony conviction. At trial, Kathleen Reavy testified at some length regarding the impoverished circumstances in which she and appellant lived, his Vietnam combat experiences, and appellant’s considerable medical and psychological difficulties. Reavy also testified that appellant suffered blackouts and losses of memory, and that he had been hysterical and crying after the shooting. Reavy apparently had a considerable effect on the jury; at least one juror was sobbing or crying during her testimony.
When Reavy was cross-examined by the State, the prosecution attempted to impeach Reavy with a prior felony conviction. The prosecutor asked Reavy if she had ever been convicted of a felony; when Reavy аnswered in the negative, the prosecutor continued by asking if Reavy had ever been convicted of a felony in Philadelphia. Again, Reavy answered in the negative.
The prosecution’s inquiries were apparently prompted by a written statement by Reavy in which she rеferred to having been arrested and placed on probation for selling hashish. At the time the questions were asked, however, the prosecution had no documentation of her conviction. Further, the prosecution did not know and apparently made no effоrt before trial to ascertain whether the conviction at issue was a misdemeanor or a felony.
The prosecution’s attempt to impeach Reavy was clearly improper. The credibility of a witness may be attacked with evidence that he has beеn convicted of a crime, but only if the crime was punishable by death or imprisonment for more than one year under the law under which he was convicted. See NRS 50.095(1). This court has noted that it will not condone the use of cross-examination as a subterfuge to blacken a witnеss’s
*578
character by insinuating criminal convictions which cannot be proven. Jones v. State,
In the instant case the State concedes that the prosecution did not have the necessary documentation, and that absent this documentation the attempt to impeach Reavy was improper. The State argues, however, that whatever prejudice was incurred was harmless given the overwhelming evidence against appellant. We do not agree. This court has previously noted that we consider suspect convictions obtained through trials involving such prosecutorial tactics, and where “a prosecutor in this state asks such a question and is not prepared to document the conviction, we shall review the point with great care.” Revuelta v. State,
Given Reavy’s close association with appellant and the nature of the offense alleged, we believe there was a real danger that the jury might assume that appellant was also involved in the illegal use of controlled substances. Thus, the prosecution probably managed to blacken both Reavy’s and appellant’s characters at the same time.
As previously discussed, the district court erred in-admitting appellant’s confession and relatеd physical evidence without determining whether appellant knowingly and intelligently waived his Miranda rights. In light of the overwhelming evidence establishing appellant’s involvement in the shooting, however, we believe the asserted errors were harmless beyond a *579 reasonable doubt as tо the question of appellant’s guilt. Several eye witnesses testified that appellant shot the victim at pointblank range, and appellant conceded at trial that he shot the victim. Given the weight and character of this evidence, we believe the addition оf appellant’s confession contributed little if anything to the jury’s finding as to guilt. At the same time, we are not convinced that the prosecution’s improper attempt to impeach Reavy did not affect the penalty phase of the trial. In light of the circumstances аnd the record, we believe that, were it not for the prosecution’s improper impeachment, it is possible that the jury might have brought back a sentence less than life without the possibility of parole. Accordingly, we affirm appellant’s conviction of first-degree murder, but reverse and remand this case for a new penalty hearing to determine whether a lesser sentence shall be imposed.
Notes
In any event, we note that
Schneckloth
v.
Bustamonte
is a search and seizure case which articulated the appropriate standard of review used to determine whether a dеfendant consented to a Fourth Amendment search. Thus, that holding is of little relevance to an analysis of whether a confession was voluntary under the Fifth Amendment.
Compare
Schneckloth v. Bustamonte,
When questioned by the district court judge, the prosecutor justified his actions on the grounds that the jury appeared to be empathetic to Reavy, and “when a juror takes empathy with a witness, then it becomes my job to get a little bit meaner than I would have normally. ...”
