                    United States Court of Appeals
                            FOR THE EIGHTH CIRCUIT
                                   ___________

                                   No. 07-2461
                                   ___________

United States of America,             *
                                      *
            Appellee,                 *
                                      * Appeal from the United States
      v.                              * District Court for the
                                      * District of Nebraska.
Oscar Martin Rodriguez Cisneros, also *
known as Ruben Hernadez, Jr., also    * [UNPUBLISHED]
known as Jose, also known as Poncho, *
                                      *
            Appellant.                *
                                 ___________

                             Submitted: April 16, 2008
                                Filed: April 21, 2008
                                 ___________

Before BYE, SMITH, and BENTON, Circuit Judges.
                            ___________

PER CURIAM.

      Oscar Martin Rodriguez Cisneros challenges the concurrent prison terms of 151
months the district court1 imposed after he pleaded guilty to two drug offenses. His
counsel has moved to withdraw and has filed a brief under Anders v. California, 386
U.S. 738 (1967). Cisneros has not filed a pro se supplemental brief, but has filed a



      1
      The Honorable Richard G. Kopf, United States District Judge for the District
of Nebraska.
motion to amend his counsel’s brief and a supplement to his motion. For the reasons
discussed below, we grant the motions of Cisneros and his counsel, and affirm.

       Counsel argues that the district court erred because, in determining the drug
quantity attributable to Cisneros, it relied on a witness who gave inconsistent
testimony and is a known methamphetamine user. After careful review, we conclude
that the district court did not clearly err in determining drug quantity. See United
States v. Carpenter, 422 F.3d 738, 748 (8th Cir. 2005) (district court’s findings of fact
regarding quantity of drugs attributed to defendant is reviewed for clear error); United
States v. Titlbach, 300 F.3d 919, 923 (8th Cir. 2002) (court of appeals will disturb
sentencing court’s drug-quantity calculation only if entire record definitely and firmly
convinces court that mistake has been made); United States v. Dierling, 131 F.3d 722,
736 (8th Cir. 1997) (sentencing court’s credibility assessment is nearly unreviewable
on appeal); see also United States v. Mickelson, 378 F.3d 810, 822 (8th Cir. 2004)
(testimony of co-conspirators is sufficient evidence on which court may base quantity
of drugs used for sentencing).

       In his pro se motion, Cisneros asserts that his sentence should be based on only
the drugs in his possession at the time of his arrest. We disagree. See United States
v. Brown, 499 F.3d 817, 824-25 (8th Cir. 2007) (district court did not clearly err in
relying on witness’s testimony regarding previous drug sales in determining drug
quantity), cert. denied, 128 S. Ct. 1222 (2008).

      After carefully reviewing the record in accordance with Penson v. Ohio, 488
U.S. 75 (1988), we have found no nonfrivolous issues.

      Accordingly, we grant the pending motions and affirm.
                     ______________________________




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