United States Court of Appeals
                            FOR THE EIGHTH CIRCUIT
                                    ___________

                                    No. 08-2384
                                    ___________

United States of America,                *
                                         *
             Appellee,                   *
                                         * Appeal from the United States
      v.                                 * District Court for the
                                         * Southern District of Iowa.
Antwan Elvago Coplen,                    *
                                         *
             Appellant.                  *
                                    ___________

                              Submitted: March 9, 2009
                                 Filed: May 26, 2009
                                  ___________

Before WOLLMAN, BRIGHT, and COLLOTON, Circuit Judges.
                          ___________

WOLLMAN, Circuit Judge.

       Antwan Elvago Coplen was convicted of conspiracy to distribute cocaine, in
violation of 21 U.S.C. § 846, and sentenced to life in prison as a career offender. He
appeals the district court’s1 denial of his motion for a new trial on the basis of newly
discovered evidence. We affirm.




      1
      The Honorable Ronald E. Longstaff, United States District Judge for the
Southern District of Iowa.
                                          I.

       Coplen was one of a number of individuals prosecuted for involvement in a Des
Moines, Iowa, drug ring that operated between approximately 2004 and 2007. In an
earlier appeal, we noted the district court’s observation that the evidence against
Coplen was “overwhelming.” United States v. Coplen, 

, 931 (8th Cir.
2008). Nine cooperating witnesses testified to either participating in or observing
cocaine deals involving Coplen. Although Coplen vigorously contested the witnesses’
credibility, the jury found him guilty, and we affirmed the sufficiency of the evidence
on appeal.

         While that appeal was pending before this court, Coplen filed in the district
court a motion for a new trial, which he argued was necessary because he had
discovered three additional types of evidence. First, he pointed to the fact that many
of the witnesses who testified for the government in his case also testified in related
cases in which the juries had acquitted the defendants. Coplen argued that these
acquittals, along with alleged inconsistencies in some of the testimony, established
that the witnesses in his trial had committed perjury. Second, Coplen claimed that two
individuals who served as defense witnesses in a subsequent trial—Sheniqua
McDowell and Richard Weigel—provided testimony that would have assisted his
case. Specifically, McDowell testified that Billie Haygood (one of the government’s
witnesses against Coplen) had a reputation for being a liar, and Weigel testified that
Charles Webster (another witness against Coplen) had been in a bar fight with Coplen
at about the same time that Webster and Coplen were allegedly doing drug deals.
Finally, Coplen claimed to have just discovered testimony from Jeff Scott and
Onterrail Altman, both of whom were housed in the same jail as the government’s
witnesses, that several witnesses who testified against Coplen had conspired to
fabricate testimony so they could get sentence reductions. According to Coplen, Scott
and Altman testified to this effect in a related trial that predated his own trial by
several months.

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                                          II.

       We review for abuse of discretion a district court’s denial of a motion for a new
trial. United States v. Zuazo, 

, 431 (8th Cir. 2001). To receive a new
trial based on newly discovered evidence, a defendant must show “(1) that the
evidence was not discovered until after the trial; (2) that due diligence would not have
revealed the evidence; (3) that the evidence is not merely cumulative or impeaching;
(4) that the evidence is material; and (5) that the evidence is such as to be likely to
lead to acquittal.” 

not met this standard.

       As an initial matter, it is far from certain that the additional evidence Coplen
cites was unavailable at the time of his trial. All of the evidence stems from witness
testimony in related trials, several of which occurred before Coplen’s. Although
McDowell and Weigel testified in a subsequent trial, Coplen has not explained why
the exercise of reasonable diligence would not have revealed their testimony.
Moreover, a new trial is not warranted when, as here, the additional evidence would
be merely impeaching. At most, McDowell’s and Weigel’s testimony would cast
some doubt on the veracity of two of the government’s nine witnesses. Similarly,
Scott’s and Altman’s testimony—that some of the government’s witnesses had
discussed making up stories—would not have established that those witnesses were
lying about Coplen. And taken as a whole, we cannot say that the additional evidence
would likely result in an acquittal.

       Coplen contends that we should evaluate the evidence under a less exacting
standard because the government knowingly used perjured testimony and withheld
exculpatory statements that were material under Brady v. Maryland, 

(1963). See, e.g., United States v. Peterson, 

, 763 (8th Cir. 2000)
(explaining the standard for knowing use of perjured testimony); United States v.
Ryan, 

, 711-12 (8th Cir. 1998) (explaining the standard for a Brady
violation). Coplen argues that acquittals in other trials involving the same witnesses

                                          -3-
prove that the witnesses committed perjury in his case. He also maintains that the
government knew that its witnesses were testifying falsely, and that the government
withheld information from Scott and Altman to that effect. Both of these arguments
fail.

         It is difficult to see how the acquittals in other trials are relevant to Coplen’s
case. Juries may choose to acquit a defendant for any number of reasons, and even
in the same trial, “[i]nconsistent verdicts are not, on their own, sufficient grounds for
reversal or a new trial.” United States v. Whatley, 

, 606 (8th Cir. 1998).
Likewise, the mere presence of conflicts in witness testimony is insufficient to
establish perjury. See 

. The acquittals and allegedly
conflicting testimony to which Coplen points fail to demonstrate perjury, much less
the government’s knowing use of fabricated testimony.

      Coplen is also unable to establish a Brady violation. “The government does not
suppress evidence in violation of Brady by failing to disclose evidence to which the
defendant had access through other channels.” 

. Both Scott
and Altman testified as defense witnesses in a related trial that predated Coplen’s by
several months and their testimony was a matter of public record. As the district court
also noted, the government apparently provided information about Scott and Altman
to Coplen in a discovery inventory. Finally, even under the Brady standard, the
evidence would not warrant a new trial because it does not create a reasonable
probability that the result of Coplen’s trial would have been different. See 

(quoting Kyles v. Whitley, 

, 433-34 (1995)).

       For the foregoing reasons, we conclude that the district court did not abuse its
discretion when it denied Coplen a new trial.

      The judgment is affirmed.
                      ______________________________

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