HARTZ, Circuit Judge.

Defendant Darryn Frierson and 19 codefendants were charged in a multiple-count indictment with alleged criminal activities as members of the Crips street gang. Following a lengthy jury trial of Defendant and five codefendants, he was convicted of eight offenses: (1) conspiracy to participate in a Racketeering Influenced and Corrupt Organization Act (RICO) enterprise, see 18 U.S.C. § 1962(d) (Count 2); (2) distribution of more than five grams of cocaine, see 21 U.S.C. § 841(a)(1) (Count 7); (3) distribution of more than five grams of crack cocaine, see 21 U.S.C. § 841(a) (Count 8); (4) possession with intent to distribute more than five grams of crack cocaine, see 21 U.S.C. § 841(a) (Count 9); (5) maintaining a place of drug distribution, see 21 U.S.C. § 856(a)(1) (Count 10); (6) conspiracy to distribute and possess with intent to distribute crack cocaine, see 21 U.S.C. § 846 (Count 11); (7) possession with intent to distribute more than five grams of crack cocaine, see 21 U.S.C. § 841(a)(1) (Count 12); and (8) conspiracy to distribute more than 50 grams of crack cocaine, see 21 U.S.C. § 846(a) (Count 28). The jury deadlocked on Count 1, which charged Defendant with racketeering, see 18 U.S.C. § 1962(c), and acquitted him on Count 29, which charged him with conspiracy to distribute marijuana, see 21 U.S.C. § 846.

The district court denied Defendant's motion for judgment of acquittal or in the alternative for a new trial, and it sentenced him to concurrent terms of 120 months' imprisonment on each count. Defendant raises the following contentions on appeal: (1) Counts 11 and 28 are multiplicitous; (2) there was insufficient evidence to support his conviction for conspiracy to commit a RICO violation; (3) the district court erred by instructing the jury that it did not need to find that an "enterprise" actually existed in order to convict him of a conspiracy to commit a RICO violation; and (4) juror bias denied him the right to a fair trial. The last three contentions are identical to ones rejected by this court on appeals by his codefendants. See United States v. Cornelius, 696 F.3d 1307, 1313-14, 1315-16, 1317-18 (10th Cir.2012) and United States v. Smith, 454 Fed.App'x. 686, 696-97 (10th Cir.2012) We therefore address only his claim of multiplicity. We hold that it is meritorious.

Defendant concedes that he did not raise the issue of multiplicity in the district court. Thus, "we review only for plain error." United States v. McCullough, 457 F.3d 1150, 1162 (10th Cir.2006) (internal quotation marks omitted). "Under the plain error standard, [a defendant] must show clear or obvious error that affected his substantial rights and seriously affected the integrity of the judicial proceedings." United States v. Battle, 289 F.3d 661, 669 (10th Cir.2002).

"Multiplicity refers to multiple counts of an indictment which cover the same criminal behavior." United States v. Barrett, 496 F.3d 1079, 1095 (10th Cir. 2007) (internal quotation marks omitted). "[M]ultiplicity is not fatal to an indictment." Id. (internal quotation marks omitted). Indeed, "[t]he government may submit multiplicitous charges to the jury." United States v. Nickl, 427 F.3d 1286, 1301 (10th Cir.2005). But "multiplicitous sentences violate the Double Jeopardy Clause," McCullough, 457 F.3d at 1162 (internal quotation marks omitted), so "if a defendant is convicted of both charges, the district court must vacate one of the convictions," Nickl, 427 F.3d at 1301.

In this case Defendant was indicted on two counts charging a conspiracy to distribute crack cocaine. Count 11 charged:

R. Vol. 1 at 72-73. Count 28 incorporated several earlier paragraphs of the indictment and then charged:

Id. at 82. Defendant contends that "[t]he only substantive difference between the two counts is that Count 28 specifies that the overall scope of the conspiracy was '50 grams and more.'" Aplt. Opening Br. at 15.

To establish that the two conspiracies charged in Counts 11 and 28 were distinct — that is, that the conspiracy convictions were not multiplicitous — the jury had to find the "existe[nce] [of] more than one agreement to perform some illegal act or acts." United States v. Fleming, 19 F.3d 1325, 1330 (10th Cir.1994) (internal quotation marks omitted). To do so, the "jurors [had to be] adequately instructed that they could not find [Defendant] guilty of more than one count of conspiracy unless they were convinced beyond a reasonable doubt that he entered into two separate agreements to violate the law." United States v. Swingler, 758 F.2d 477, 492 (10th Cir. 1985).

In this case the jury was not so instructed, and accordingly it did not find that Defendant entered into two separate agreements to distribute crack cocaine. The instruction to the jurors that they "separately consider each defendant and each Count," R. Vol. 1 at 243, did not alert them that they needed to find that the two conspiracies involved distinct agreements. And there was nothing in the government's closing argument to suggest that the conspiracy alleged in Count 11 was anything other than part of the larger conspiracy alleged in Count 28, or that Defendant had two separate agreements to distribute illegal drugs. Thus, the two convictions on Counts 11 and 28 are plainly multiplicitous. The government concedes in its brief that if the counts are multiplicitous, Defendant is entitled to relief under plain-error review.

We REMAND with instructions to the district court to vacate Defendant's conviction and sentence on either Count 11 or Count 28. We AFFIRM the convictions and sentences on the remaining counts.