235 F.3d 1173 (9th Cir. 2000)
UNITED STATES OF AMERICA,  Plaintiff-Appellee,v.TROY ANTHONY EDWARDS, Defendant-Appellant.
No. 99-30143
UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT
Argued and Submitted April 6, 2000Filed December 27, 2000

Peter J. Avenia & Robert H. Gombier, Tacoma, Washington, for the defendant-appellant.
Timothy J. Ohms, Special Assistant United States Attorney, Spokane, Washington, for the plaintiff-appellee.
Appeal from the United States District Court for the Western District of Washington Franklin D. Burgess, District Judge, Presiding. D.C. No. CR-97-05101-FDB
Before: Harry Pregerson, Dorothy W. Nelson, Circuit Judges, and Lawrence K. Karlton, District Judge.1
PER CURIAM:


1
Troy Anthony Edwards appeals his conviction from his second trial on one count of possession of cocaine with intent to distribute. Because we find that the admission of certain evidence denied Edwards the right to a fair trial, we reverse.


2
The prosecution of Edwards has been troubled from the beginning. At the first trial, the court admitted a bail receipt linking Edwards to the black bag that contained the cocaine after the bag, which had been introduced as evidence, was removed from the courtroom by a government attorney in violation of Local Rule CR 79(g). At the second trial, the government called a key witness despite repeatedly telling Edwards's attorney and the district court that the witness had refused to testify, and, in any case, could not be found.

I. FACTUAL AND PROCEDURAL BACKGROUND

3
In January 1995, the Tacoma Police responded to the scene of a domestic dispute. The victim, Carbeania Grimes, was bleeding from her forehead and was very upset. She told the officers that her boyfriend, Edwards, had struck her in the head with a gun. Grimes apparently also told the officers that Edwards had left the house with the gun and a black nylon bag. Four officers interviewed Grimes; one of the officers made a tape recording of his interview.


4
An officer at the scene observed Edwards drive a gray BMW out of an alley that ran next to Edwards's house and back the car into a parking space. Edwards was arrested on the suspicion of assault. Based on the interviews with Grimes, the police impounded the BMW, which was not registered to Edwards. The officers then obtained a warrant to search the car for the gun. Inside the trunk, they found clothes, paperwork, and a black nylon bag. The police opened the bag, which contained no indicia of ownership, and saw baggies of what appeared to be crack cocaine. They closed the bag and then obtained a second search warrant to search it. The search revealed eight baggies of crack cocaine and nearly seven kilograms of cocaine. In the front seat of the car, the police found a folder of legal papers belonging to Edwards, two cellular phones, and material used to package the cocaine. They also found various shopping bags with receipts containing Edwards's name. Neither the receipts nor Edwards's legal papers were ever inventoried by police. They never found the gun.


5
Edwards was charged with possession of cocaine with intent to distribute in violation of 21 U.S.C. SS 841(a)(1) & (b)(1)(A). He initially pleaded guilty, but later moved to withdraw his plea. The district court denied his motion to withdraw the guilty plea, and sentenced Edwards to 240 months in prison. In 1997, the Ninth Circuit vacated Edwards's guilty plea and remanded the case to the district court for trial. See United States v. Edwards, No. CR-95-05021-1-JET, 1997 WL 8579 (9th Cir. 1997) (unpublished opinion).

A. First Trial

6
At Edwards's first trial on May 5 and 6, 1997, the defense argued that the government had insufficient proof that the black nylon bag containing cocaine belonged to Edwards. During pretrial proceedings, the district court excluded as inadmissible hearsay the statements made by Grimes in her interviews with the police. Because Grimes refused to testify at the first trial, her hearsay statements to the police were the government's only evidence linking Edwards to the black nylon bag found in the trunk of the car.2


7
The government introduced the black nylon bag into evidence on the first day of the trial. Neither the bag nor its contents contained any fingerprints. A police officer who had searched the car testified that there was nothing in the black nylon bag that established the identity of its owner. The bag and the cocaine were separate exhibits but were contained in a single box, which had been sealed before it was opened and the evidence was introduced. At the end of the first day of trial, the prosecutor instructed another officer to take the black nylon bag out of the courtroom and into the U.S. Attorney's office. This conduct violated Local Rule CR 79(g), which states that "[a]fter being marked for identification, all exhibits, except weapons or other sensitive material, shall be placed in the custody of the clerk during the duration of the trial, unless otherwise ordered by the court." For safety and security reasons, this local rule gives parties custody, during the trial, of "any weapons or other sensitive exhibits." The cocaine was unquestionably a sensitive exhibit, but the bag was not.


8
At the U.S. Attorney's office, the prosecutor examined the empty bag in the presence of two officers. In examining the bag, he removed a cardboard stiffener in the bottom of the bag. Beneath the cardboard stiffener, he allegedly discovered a wadded up piece of paper. The paper was a bail receipt from the Tacoma Municipal Court with Edwards's name on it. The bag had been in the possession of the Tacoma Police for two years, but the receipt was not discovered until the first day of trial. See Edwards, 154 F.3d at 919. That evening, the prosecutor called Edwards's counsel and informed him that the government would be introducing the bail receipt.


9
The next day, Edwards's counsel moved to exclude the bail receipt and asked for a mistrial. Defense counsel claimed that his case had been unfairly prejudiced by the alleged discovery of the receipt because the defense theory depended entirely on the contention that there was no evidence linking Edwards to the black nylon bag. Counsel also argued that the prosecutor was injecting himself into the case as the government's chief witness. The district court denied the motion. At the suggestion of the trial judge, a police officer then testified about the bail receipt, acting as if he were discovering it for the first time in the courtroom. On cross-examination, the officer admitted that the prosecutor had found the bail receipt the night before. On re-direct, when the officer was again asked about how the bail receipt had been discovered, he insisted that no one had tampered with the black bag.


10
The prosecutor did not testify. Neither did Grimes. The prosecutor told the court that Grimes was living in Las Vegas, had been subpoenaed, but was reluctant to testify. The court denied a continuance that would have allowed the government to secure Grimes's testimony. The police conceded on cross examination that they failed to inventory the legal documents contained in the manila folder found in the front seat of the BMW. The failure to inventory those documents raised additional questions about the origins of the bail receipt purportedly discovered in the bottom of the black bag. During closing argument, the prosecutor denied that the black nylon bag had been tampered with and argued that the bail receipt was "the closest thing to a smoking gun that ties the defendant to the bag." Id. at 64. The jury convicted Edwards, and the trial judge sentenced him to 262 months in prison.


11
On June 23, 1998, the Ninth Circuit reversed Edwards's conviction, finding that "the prosecutor's continued performance of his role as prosecutor in this case violated the principles upon which both the rule against prosecutorial vouching and the advocate-witness rule are based. " Edwards, 154 F.3d at 921. Because the court declined to address the other issues raised, it did not rule on Edwards's argument that the bail receipt should have been suppressed. See id. at 924 n.3. The court concluded "that the prosecutorial vouching in this case warrants reversal of Edwards's conviction because the error cannot be characterized as harmless." Id. at 923. Following this discussion of the vouching rule and the basis for reversal, the panel noted that it did not view the prosecutor's conduct as unethical or improper. Id.

B. Second Trial

12
A new judge presided over the second trial. The case was re-assigned to an out-of-district prosecutor. Edwards renewed his motion to suppress the bail receipt. At a pre-trial conference on January 8, 1999, Edwards's attorney argued that the bail receipt should be excluded because: (1) the evidence had been illegally obtained in direct violation of Local Rule CR 79(g); (2) it was inherently unreliable; and (3) suppression was an appropriate sanction for government misconduct in the first trial. The district court denied the motion and instructed both parties to prepare a list of witnesses they intended to call. The government left Grimes's name off the witness list and repeatedly informed both the judge and defense that she would not be testifying.


13
The defense attorney's opening statement at the retrial focused on the bail receipt:


14
The government wants you to think that this case is  about a big bag of dope, but what this case is really  about is a little piece of paper. A little piece of paper  like this crumpled up. A little piece of paper with  Troy Edwards' name on it that was planted in that  big bag of dope by the government to fake the evidence that the government didn't have. A little crumpled up piece of paper that says you must acquit  Troy Edwards.


15
The defense explained that the prosecutor at the last trial described the bail receipt as "the smoking gun, " and that absent this tainted evidence the government had no way of determining that the bag belonged to Edwards. Edwards's defense focused on discrediting the government's witnesses who handled the black nylon bag and who allegedly found the bail receipt. The former prosecutor testified that none of the documents from Edwards's car had been inventoried. He admitted that, during the first trial, he had told one of the officers to remove the black nylon bag from the courtroom after it had been admitted into evidence and bring it back to the U.S. Attorney's Office. He also recounted how he allegedly discovered the bail receipt by removing the bag's cardboard stiffener.


16
Before the second day of the retrial, the government announced that Grimes would testify. The court denied Edwards's motion to exclude Grimes's testimony or to declare a mistrial. During his direct examination of Grimes, the prosecutor asked numerous questions about the black bag:


17
Q: Ma'am, did you in fact see the defendant with a  black bag as he left the residence.


18
A: I seen him with something.


19
Q: Did it look like a black bag, ma'am?


20
A: Yes, it was a dark colored bag.


21
Grimes could not remember what she told police officers about the bag on the night of the incident:


22
Q: Do you remember telling them you saw the  defendant leave with a black bag?


23
A: No, I don't remember telling them that, but if  that's what I told them


24
Q: Do you remember looking at photographs at that  time of the black bag?


25
A: No, I don't remember.


26
Although Grimes acknowledged that either she or Edwards had purchased the bag in question, she would not testify that she saw Edwards carrying a black bag that night.


27
On cross-examination, Grimes admitted that she was drunk, that she had been crying, and that she had a difficult time seeing that night. She also attempted to clarify her testimony on direct examination:


28
Q: It's also true, isn't it, that you saw Troy leave the  house, but you didn't see exactly what he was carry ing isn't that correct?


29
A: No, I didn't see exactly what he was carrying.


30
Q: In fact, you weren't sure about the what color any  bag he might have been carrying was, isn't that cor rect?


31
A: No, I just know it was a dark bag. I didn't know  the exact description of the bag.


32
Q: And you had a number of pieces of luggage, did  you not?


33
A: We had three sets.


34
Grimes's inability to identify the bag on cross-examination is corroborated by what she told police at the scene. In a transcript of Grimes's taped interview with one of the police officers, Grimes told the officer, "so I knew he took a bag and the officer asked me what color it was, and I told him I didn't know, I knew it was a bag, because it was over his shoulder . . . ."


35
In its closing argument, the government argued that Grimes's testimony was the new "smoking gun" that obliterated the defense's theory of the case:


36
The receipt is a moot point at this point in time. It's  nice. It's corroborative. It's helpful to have. But  what was that receipt. That receipt was circumstantial evidence, basically, of the ownership of this bag.  It was circumstantial evidence of what Ms. Grimes  has now confirmed to you with direct testimony  based upon her personal knowledge.


37
It wasn't a comfortable thing to do. You could see  her looking at this and saying, "Yeah, I do recognize  that." Whatever the receipt was in the last trial, the  receipt is not the smoking gun in this trial. The  smoking gun is Ms. Grimes saying, "I recognize that  bag."


38
The following day, the jury convicted Edwards. On March 12, 1999, the district court heard oral argument and denied Edwards's renewed motion for a new trial. On April 23, 1999, Edwards was sentenced to 240 months in prison. Edwards timely appeals.

II. SUPPRESSION OF THE BAIL RECEIPT

39
Edwards argues that the bail receipt should have been excluded at the second trial because at the first trial the government had removed the black bag from the courtroom inviolation of the local rule, because the government tampered with the bag, and because the evidence was inherently unreliable.


40
We review the district court's decision to admit or exclude evidence for an abuse of discretion. See United States v. LeonReyes, 177 F.3d 816, 819 (9th Cir. 1999). Such decisions will be reversed for an abuse of discretion only if such nonconstitutional error more likely than not affected the verdict. See United States v. Ramirez, 176 F.3d 1179, 1182 (9th Cir. 1999) (citations omitted).


41
"The authentication of evidence is `satisfied by evidence sufficient to support a finding that the matter in question is what its proponent claims.' " United States v. Harrington, 923 F.2d 1371, 1374 (9th Cir. 1991) (quoting Fed. R. Evid. 901(a)). The burden is on the government to "introduce sufficient proof so that a reasonable juror could find that [the evidence is] in `substantially the same condition' as when [it] was seized." Id. (quoting Gallego v. United States, 276 F.2d 914, 917 (9th Cir. 1960)).


42
Local Rule 79(g) mandates that "all exhibits, except weapons and other sensitive material, shall be placed in the custody of the clerk during the duration of the trial . . . ." As a witness in the second trial, the prosecutor admitted on direct and on cross-examination that the empty bag did not fall into the category of "sensitive material" contemplated by the rule. "Under normal procedures," he testified, the bag would have been marked separately and kept in the clerk's custody until the end of the trial. Local Rule 79(g) is designed to protect the integrity of the evidence. The fact that the bag was removed from evidence and the particular circumstances of the discovery of the bail receipt undermine the reliability of the evidence.


43
Under the unique circumstances present in this case, including the failure of the police to conduct a thorough initial search of the bag, the failure to inventory numerous papers belonging to Edwards that were seized from the car, the removal of the bag from the courtroom and the timing and circumstances of the discovery of the bail receipt, we conclude that the evidence is inherently unreliable and that the bail receipt should have been excluded at the second trial.


44
Our conclusion that the bail receipt should have been suppressed does not end our inquiry. We also must address the harmless error standard. We are guided by the rule that evidentiary decisions will be reversed for an abuse of discretion only if such nonconstitutional error more likely than not affected the verdict. See Ramirez, 176 F.3d at 1182 (citations omitted).


45
We hold that the admission of the bail receipt was not harmless error because Grimes's equivocal testimony, standing alone, is insufficient to support a conviction beyond a reasonable doubt. Grimes never linked Edwards to the black nylon bag containing cocaine, nor could she identify the bag she saw Edwards carrying when he left the house, other than to provide a vague description that it was a "dark colored bag." Furthermore, Grimes admitted that she was drunk that night, couldn't see that well, and that she and Edwards owned three different sets of luggage.


46
During closing argument, the government conceded that the bail receipt "corroborated" Grimes's testimony. But the bail receipt did more than that -it provided a degree of certainty regarding ownership of the bag that Grimes's testimony could not supply. Because the bail receipt more likely than not affected the outcome of the trial, we hold that its admission was not harmless error.

III. CONCLUSION

47
We reverse and remand for further proceedings not inconsistent with the views expressed in this opinion.


48
REVERSED AND REMANDED.



Notes:


1
 Honorable Lawrence K. Kartlon, United States District for the Eastern District of California, sitting by designation.


2
 The district court subsequently admitted Grimes's hearsay statements in the first trial, ruling that the defense had "opened the door," on cross examination. United States v. Edwards, 154 F.3d 915, 918 (9th Cir. 1998).


