Alex E. Womack appeals from the final judgment entered in the District Court for the Northern District of Iowa upon a jury verdict finding him guilty of conspiracy to distribute fifty or more grams of cocaine base (crack) in violation of 21 U.S.C. § 846. The district court sentenced Wom-ack to 292 months imprisonment, with five years supervised release and $100 special assessment. Womack appeals on four grounds: (1) the district court erroneously admitted inadmissible hearsay statements at trial, (2) the evidence does not support the jury’s verdict, (3) the district court erroneously denied Womack’s motion for new trial based upon newly discovered evidence, and (4) the district court erred in applying a four level increase when sentencing Womack pursuant to the United States Sentencing Guidelines. We affirm.
I. BACKGROUND
On March 13, 1997, Womack was indicted for two counts of distribution of cocaine base in violation of 21 U.S.C. § 841(a)(1). Clerk’s R. at 1-2. On April 25, 1997, a superseding indictment was filed which added a third count. This count charged that between 1992 and 1997, Womack conspired “to distribute and possess with the intent to distribute fifty or more grams” of crack cocaine in violation of 21 U.S.C. § 846. Clerk’s R. at 3^4. Prior to the trial, which began on October 21, 1997, the government dismissed the two distribution counts. The jury found Womack guilty on the conspiracy count on October 24, 1997. Clerk’s R. at 19. Womack then filed a pro se motion for new trial. Clerk’s R. at 20.
On November 19, 1997, Judge Melloy received a letter from Dennis Patrick Murphy, an inmate at Linn Correctional Center, which alleged that some of the government’s witnesses had fabricated testimony at Womack’s trial. Appellant’s Br. Add. at A-5 through A-10. On November 25, 1997, Womack filed a motion for a new trial based upon newly discovered evidence as a result of the emergence of this letter. Appellant’s Br. at 2. The hearing on the motion for new trial began on February 20, 1998. On March 13, 1998, Womack filed a motion for new trial based on ineffective assistance of counsel. Clerk’s R. at 22. The court held a hearing on March 20, 1998 and authorized Womack’s trial counsel to withdraw. The court appointed substitute counsel, who represented Womack in the motion for new trial hearing on June 1 and 10,1998. Appellant’s Br. at 2.
On July 15, 1998, Womack filed an amended motion for new trial based on ineffective assistance of counsel. On August 20, 1998, Judge Melloy denied Wom-ack’s motion for new trial based upon the newly discovered evidence but declined to rule on the ineffective assistance of counsel claims, explaining that these claims would be more appropriately raised at the post conviction stage. Clerk’s R. at 25; Appellant’s Br. at 2.
At the sentencing hearing on September 14, 1998, the district court assigned Wom-ack a base offense level of 36 pursuant to U.S.S.G. § 2D1.1, after determining that the drug quantity attributable to Womack was 850 grams. Tr. Sentencing Hr’g, *883 Sept. 14, 1998, at 26. The court imposed a four level enhancement for playing an aggravating role in the offense, pursuant to U.S.S.G. § 3B1.1. Tr. Sentencing Hr’g, Sept. 14, 1998, at 29-31. Womack had no criminal history, and Judge Melloy placed him in criminal history category I. Appellant’s Br. at 3; Appellee’s Br. at 2. Since Womack’s total offense level was now 40, the guideline range for that level was 292 to 365 months. Judge Melloy sentenced Womack to serve 292 months, with five years supervised release and $100 special assessment. Tr. Sentencing Hr’g, Sept. 14, 1998, at 35-38. Womack then filed a timely notice of appeal. Clerk’s R. at 26.
At trial, four witnesses testified to conversations between themselves and Ronnie Rice, an alleged co-conspirator with Wom-ack in the drug business. Appellant’s Br. at 11-12; Appellee’s Br. at 16. Three witnesses testified to conversations they had with someone named “Mike” or “Mike Thurman,” another alleged co-conspirator with Womack. Appellant’s Br. at 13; Ap-pellee’s Br. at 17. One other witness testified to a conversation he had with a man named Chuckie, another alleged co-conspirator. Appellant’s Br. at 14; Appellee’s Br. at 19. A total of thirteen witness testified that they had bought crack cocaine from Womack, had seen Womack in possession of large quantities of crack, had seen him selling crack to others, or had seen Womack direct others to sell crack for him. Appellee’s Br. at 2-13. Womack alleges that five of these witnesses fabricated their stories in order to obtain downward departures from the government. Appellant’s Br. at 16. Womack’s girlfriend and another woman testified on his behalf. The second woman testified that one of the government’s witnesses had attempted to persuade her to gather evidence against Womack. Appellant’s Br. at 7.
At the hearing for new trial, Womack called Murphy and five other witnesses who testified that five of the government witnesses had worked together to fabricate their stories about Womack. The government called those five trial witnesses, who all denied lying under oath. Appellant’s Br. at 7-9.
II. DISCUSSION
A. Admissibility of Alleged Co-Conspirators’ Statements
Womack argues that the district court erred by admitting numerous hearsay statements as co-conspirator statements made during the course of and in furtherance of the alleged conspiracy. Womack alleges that the testimony of the witnesses as to their conversations with Ronnie Rice, Mike Thurman, and Chuckie were not admissible because there was no evidence that Rice, Thurman, Chuckie and Womack were in a conspiracy together. Further, Womack argues, the alleged statements were not made in furtherance of a conspiracy. Appellant’s Br. at 11-14.
The Court reviews a district court’s determination to admit evidence under the deferential abuse of discretion standard.
United States v. Johnson,
In order to admit statements of co-conspirators against a defendant, “the government must prove by a preponderance of the evidence that (1) a conspiracy existed; (2) the defendant and the declarant were members of the conspiracy; and (3) the declaration was made during the course of and in furtherance of the conspiracy.”
United States v. Guerra,
In the instant case, there was sufficient evidence for the district court to find a conspiracy between Rice, Thurman, Chuckie and Womack. Several witnesses testified that Rice and Thurman delivered cocaine that the witnesses had ordered from Womack. Other witnesses testified that they saw Womack supply Rice and Thurman cocaine for the purpose of selling it. Additionally, some of the witnesses testified that they were told by Rice and Thurman that they were working for Womack and that Womack supplied the two men with crack cocaine to sell. Appellant’s Br. at 3-7; Appellee’s Br. at 2-13. One witness testified to receiving crack from Womack through Chuckie. The witness testified that Chuckie stated that he was working for Womack. Appellant’s Br. at 14; Appellee’s Br. at 8. The evidence suggests that the admitted statements were made by members of a conspiracy and in furtherance of that conspiracy. Under the circumstances, the district court did not abuse its discretion by admitting these hearsay statements.
B. Sufficiency of Evidence to Support Jury Verdict
Womack argues that there was insufficient evidence to convict him of conspiracy. We must review the sufficiency of the evidence in the light most favorable to the government.
United States v. Jorgensen,
In order to prove that a conspiracy existed, the government must prove that two or more people agreed to commit an unlawful act. The government must also prove that at least one of these people acted to achieve the unlawful act. It must be proven, beyond a reasonable doubt, that the defendant knew the main object of the conspiracy.
United States v. Slaughter,
When viewed in the light most favorable to the government, the evidence establishes that Womack was a member of a conspiracy to distribute and possess with intent to distribute more than fifty grams of crack between 1992 and 1997. The government presented thirteen witnesses
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who testified that they had obtained crack from Womack. Rice and Thurman delivered the crack to these witnesses and told them that the defendant was the source of the crack. These witnesses also testified that Womack, Rice and Thurman traveled to Chicago on different occasions to obtain crack. The evidence shows that the defendant directed several other people, including Georgia Oltmanns, Rice, Thurman and John “Flip” Orr to see crack cocaine for Womack in Dubuque, Iowa. Appellant’s Br. at 3-7; Appellee’s Br. at 2-13. Womack also tried to recruit others to sell crack on his behalf and tried to establish territories in Dubuque where each of his dealers could sell crack. Appellant’s Br. at 6; Appellee’s Br. at 10-11; Tr. Sentencing Hr’g, Sept. 14, 1998, at 23. Although there were no other co-conspirators named in the indictment, this factor does not preclude a finding of a conspiracy.
United States v. Agofsky,
C. Denial of Motion for New Trial Based Upon Newly Discovered Evidence
Womack argues that the district court erred in denying his motion for new trial based upon newly discovered evidence. The court reviews a district court’s denial of a motion for new trial based on newly discovered evidence for abuse of discretion.
United States v. Ryan,
Womack contends that after the trial concluded, he found evidence that five of the government’s witnesses had fabricated their testimony in order to obtain downward departures in their own sentences. Appellant’s Br. at 16. In the hearing on the motion for new trial, Womack argued that the letter that Judge Melloy received from Dennis Murphy constituted evidence that five government witnesses fabricated their stories in Womack’s trial. Murphy testified at the hearing that certain government witnesses conspired to fabricate testimony to implicate Womack. Womack presented other witnesses who corroborated Murphy’s testimony. Much of the planning for this conspiracy allegedly occurred in the Linn County Jail law library. Additionally, Womack presented jail records that showed multiple visits by the inmates in question to the law library. Appellant’s Br. at 16-17. The government called the five trial witnesses in question, and they denied fabricating their testimony. Appellant’s Br. at 18. Accordingly, the district court discredited Murphy’s testimony. The court also found the government’s witnesses more credible than all of Womack’s witnesses on the issue of fabrication. Appellant’s Br. Add, at A-14 through A-18. Womack argues that this finding was a clear abuse of discretion..
A credibility determination by the district court -is “ ‘virtually unreviewable on appeal.’ ”
United States v. Martin,
Five pre-requisites must be met in order to justify a new trial based upon newly discovered evidence: “(1) the evidence must in fact be newly discovered, that is, discovered since the trial; (2) facts must be alleged from which the court may infer diligence on the part of the movant; (3) the evidence relied upon must not be merely cumulative or impeaching; (4) it must be material to the issues involved; and (5) it must be of such nature that, on a new trial, the newly discovered evidence would probably produce an acquittal.”
United States v. Luna,
D. Assessment of the Four Level Increase Pursuant to U.S.S.G. § 3Bl.l(a)
Womack contends that the district court erred in assessing a four level increase pursuant to U.S.S.G. § 3B1.1(a) because there is “scant evidence” to support a finding that Womack was the organizer or leader of a criminal activity involving five or more participants. Appellant’s Br. at 20. Womack emphasizes that none of the alleged co-conspirators testified against him. Further, Womack argues that hearsay testimony alone was used to identify these alleged co-conspirators. Womack also contends that the truthfulness of the government’s witnesses was significantly challenged during post-trial proceedings and that the government, at best, proved only “personal use purchases” between Womack and other people. Appellant’s Br. at 20. Therefore, Womack argues, the four level increase was improper.
A district court’s sentencing determinations under the United States Sentencing Guidelines are reviewed for clear error.
United States v. Guerra,
The district court found that five people were involved in the conspiracy with Wom-ack. At least four people sold drugs for Womack. Tr. Sentencing Hr’g, Sept. 14, 1998, at 31. Three people assisted Wom-ack in obtaining drugs from sources in Chicago. Appellee’s Br. at 36. Womack set the price for the crack cocaine and tried to control and create territories for the sale of drugs in Dubuque. He also attempted to recruit new members into the conspiracy. Tr. Sentencing Hr’g, Sept. 14, 1998, at 30. Based on this evidence, the district court’s finding that Womack was a leader in the conspiracy was not clear error.
III. CONCLUSION
Finding the verdict supported by sufficient evidence and finding the district court properly admitted the co-conspirators’ statements, denied the appellant’s motion for a new trial, and assessed a four level increase pursuant to U.S.S.G. § 3Bl.l(a), we hereby affirm.
Notes
. The requirement of independent evidence to support the admission of a co-conspirator’s statement was rejected in
Bourjaily,
