Defendant Kurt H. Thompson challenges the district court order convicting him of conspiring to distribute and possess with intent to distribute 500 or more grams of cocaine. See 21 U.S.C. §§ 841(a)(1), 841(b)(1)(B)(ii), 846. We affirm.
I
BACKGROUND
In 2003, Justin Canney began purchasing large supplies of high-purity, uncut cocaine from Jason Higgins in New York for resale in Maine. Defendant Thompson soon began purchasing from five to twenty ounces of cocaine per week from Canney, which he resold to his own customers, whom he identified, inter alia, as “Jared,” “Dan,” and Frank Cicero, who was also a customer of Canney’s. Cicero in turn resold the cocaine he acquired from Canney and Thompson to his own clients. Subsequently, however, Cicero and Thompson had an argument, and Cicero informed Canney that he henceforth would purchase cocaine only from him, and not from Thompson. Eventually Canney asked Thompson to “cut” the pure cocaine (viz., add fillers to increase the volume and the street value of the drug) which Canney received from New York, because Canney was worried that his live-in girlfriend might discover his drug dealing. Canney’s illicit activities eventually became the focus of a United States Drug Enforcement Agency (DEA) investigation, during which *270 his house and person were placed under surveillance.
In May 2004, Canney sold Thompson two and one-half ounces of pure cocaine, and asked that Thompson return it to him “cut,” for resale to Cicero. On May 3, Thompson arrived at the Canney residence with five ounces of cut cocaine. Canney concealed the cocaine in a false-bottom cannister, and he and Thompson drove away in Canney’s car to deliver the drugs to Cicero. After Canney committed several traffic violations, the police, who were cooperating with the DEA investigation, stopped the vehicle and with Canney’s consent, performed a limited search of the vehicle. No incriminating evidence was disclosed. As planned, the police then allowed Canney and Thompson to drive off, followed by undercover DEA agents. Immediately, Canney made several evasive driving maneuvers, drove to a vacant lot, and placed several cell phone calls.
In due course, Canney and Thompson stopped at a restaurant for lunch. Undercover agents managed to station themselves near the Canney and Thompson table, and overheard their conversation. Thompson stated that he was “freaked out” by the traffic stop, and when Canney told Thompson how to dispose of cocaine quickly {viz., dissolving it in water), Thompson stated that he had “tucked” the evidence during the traffic stop. Upon exiting the restaurant, Canney and Thompson were placed in custody. Thompson was found to have $3000 in cash.
After questioning Canney and Thompson, the DEA agents decided to arrest Canney, but released Thompson due to insufficient evidence that he had been involved in the ongoing drug distribution engaged in by Canney. Canney eventually entered into a plea agreement to testify as to Higgins’ and Thompson’s participation in Canney’s drug enterprise. The government sent Thompson a target letter, and on July 2, 2004, Thompson was arrested, and later indicted on one count of conspiring to distribute and possess, with intent to distribute, 500 grams or more of cocaine, see 21 U.S.C. §§ 841(a)(1), 841(b)(l)(B)(ii), 846. Following a two-day jury trial, Thompson was found guilty. He now appeals from the ensuing judgment of conviction.
II
DISCUSSION
A. The Fifth Amendment Claim
Thompson contends that the district court abused its discretion in denying the motion for mistrial made after DEA Special Agent Wolf testified that, following Thompson’s arrest, “[Thompson] declined to make much of any statement.” Thompson maintains that Wolfs testimony constituted an improper and unfair comment on Thompson’s Fifth Amendment right not to be compelled to be a witness against himself.
During direct examination, the government asked Agent Wolf: “And what is it that [defendant] told you back at the police station?” Wolf answered: “He declined to make much of any statement other than ...” The district court sustained defense counsel’s objection, and Wolf continued with his testimony. Government counsel then asked: “Did [defendant] say anything to you?” Wolf responded: “That they [Thompson and Canney] were going to meet Cicero.” Wolf then testified as to Canney’s comments and actions on May 3, 2004. Only then did defense counsel move for a mistrial or for a cautionary instruction based on Wolfs comment that Thompson had “declined to make much of any statement.” The district court denied the motion for mistrial, agreed to give a cau *271 tionary instruction, but warned defense counsel that such an instruction might cause the jury to focus on Wolfs comment more than it had already done so. Defense counsel advised the court that the defense did not want the curative instruction.
The defendant has a constitutional right to remain silent following arrest, and it is inappropriate for the government intentionally to make or solicit comments concerning a defendant’s exercise of that right.
See Griffin v. California,
We conclude that the district court committed no manifest abuse of discretion in denying the Thompson motion for mistrial.
See United States v. Rullan-Rivera,
Several minutes later, defense counsel
*272
abruptly moved for a mistrial,
1
and the district court offered to give a curative instruction.
See United States v. Freeman,
In any event, the government’s case against Thompson was remarkably strong.
See Taylor,
B. The Co-conspirator Statements
Next, Thompson contends that the district court erred in admitting into evidence — as a statement made by Thompson’s co-conspirator under Federal Rule of Evidence 801(d)(2)(E) — Frank Cicero’s comment to Canney that he now wanted to buy his drugs only from Canney because Cicero and Thompson had had a falling out. Thompson maintains that the Cicero statement is inadmissible hearsay since the government did not present any evidence that he and Cicero were co-conspirators, or that Cicero made the statement “in furtherance of the conspiracy,” and that Cicero instead stated that he no longer wanted to be associated with Thompson.
District court rulings admitting evidence under Rule 801(d)(2)(E) are reviewed only for clear error.
See United States v. Castellini,
First, Thompson never raised the argument below that the Cicero statement was inadmissible on the ground that the government failed to prove that Thompson and Cicero were members of the same conspiracy. Consequently, it is forfeited on appeal.
See United States v. Paradis,
C. The Co-conspirator’s Guilty Plea
Thompson next contends that the district court erred in allowing the government to introduce, in its case in chief, the fact that Canney and Higgins had entered a guilty plea to the conspiracy charge, and *274 in not providing a cautionary instruction that the jury should only consider the evidence as it pertained to the credibility of Canney and Higgins, not to Thompson’s guilt.
Thompson incorrectly states that the court did not give a limiting instruction. In its final charge, the court stated: “As for the guilty pleas of Jason Higgins and Justin panney, you may consider their respective pleas in assessing their individual credibility, but you must not consider those guilty pleas as any evidence against Kurt Thompson.” As Thompson lodged no objection to the admission of this evidence, but instead elicited the same evidence during cross-examination to attack the credibility of the government’s witnesses, we find no error in its admission in evidence.
See United States v. Dworken,
D. The Anonymous Letter
Next, Thompson contends that the district court erroneously admitted in evidence — as Thompson’s own incriminating statement — an anonymous handwritten letter Canney received in jail one week after his May 3 arrest, since the government failed to adduce evidence (e.g., a handwriting expert) that the letter was in fact sent by Thompson.
We discern no abuse of discretion in the admission of this letter. “Anonymous correspondence may be sufficiently distinctive in its ‘appearance, contents, substance, internal patterns or other distinctive characteristics,’ within the meaning of Fed.R.Evid. 901(b)(4), to meet the authentication requirement.”
United States v. Bello-Perez,
The anonymous letter’s content precisely fits Thompson’s circumstances and predicament in May 2004. Coming only one week after the Thompson and Canney joint arrests, the letter’s author stated that “the target letter they gave me still has me losing sleep at night," a plain reference to the target letter sent to Thompson after Canney admitted, to law enforcement agents, Thompson’s complicity in his drug distribution. See Fed. R.Evid. 901, advisory committee note example (4) (noting that a document “may be shown to have emanated from a particular person by virtue of its disclosing knowledge of facts known peculiarly to him”). The author stated that “they let me go ... because I didn’t say anything,” a clear reference to the fact that Thompson was released from custody after his arrest on May 3, 2004 for lack of evidence, whereas Canney was not.
Finally, Canney testified that he recognized the return address, provided in the letter, as Thompson’s residence. See 5 Jack B. Weinstein and Margaret A. Burger, Weinstein’s Evidence ¶ 901(b)(4)[02], at 901-67 (1991) (noting that “return address” is valid indicium for authentication purposes). Given these internal indicia, the district court did not abuse its discretion in admitting the letter into evidence as *275 a statement of the defendant. See Fed.R.Evid. 901(a) (noting that authentication of evidence “is satisfied by evidence sufficient to support a finding that the matter in question is what its proponent claims”).
F. The Sufficiency of the Evidence
Finally, Thompson contends that the district court erred in denying his motion for judgment of acquittal because the government proved at most that he and Can-ney had a mere seller-buyer relationship, which is insufficient to establish a drug conspiracy,
see United States v. Gore,
We review
de novo
the denial of a motion for judgment of acquittal.
See United States v. Hatch,
The government was required to establish that Thompson agreed with Canney and others, albeit tacitly, to commit the substantive crime of cocaine distribution, that this was the object of their agreement, and that Thompson knowingly and voluntarily participated in the conspiracy.
See United States v. Santiago,
The government adduced ample evidence that Thompson and Canney were involved in much more than a mere one-time or transitory seller-buyer relationship. In distinguishing a conspiracy from a mere vendor-vendee arrangement, the core consideration is “whether the evidence surrounding the transaction(s) is sufficient to allow a fairminded jury to find beyond a reasonable doubt that A knew that B was reselling the drugs, and intended to facilitate the resales.” Id. at 24. During their extended relationship, Thompson purchased for resale a total of 4 kilos of cocaine from Canney, and Thompson expressly told Canney that he was reselling it to his own clients, including Frank Cicero. Thompson cut the cocaine for Canney and for himself. On May 3, 2004, Thompson and Canney were on their way to deliver drugs to Cicero. Subsequent searches uncovered large quantities of drugs and cash, thus confirming that this joint drug distribution network was entrenched, and most definitely not a onetime, small-scale sales transaction. We accordingly conclude that the government adduced more than enough evidence that Thompson “agreed” to conspire with Can-ney and others in a cocaine distribution scheme. Consequently, we affirm the jury verdict. 3
Affirmed.
Notes
. The unexplained delay in moving for mistrial suggests that defense counsel initially did not view the Wolf comment as so prejudicial that it warranted a new trial. Unless the defendant lodges a contemporaneous objection, rarely will we infer that a comment was unduly prejudicial.
See Taylor,
. The Thompson forfeiture is hardly a surprise, given the trial evidence that Canney, Thompson, and Cicero were all drug sellers with a common source of supply (viz., Higgins in New York), and that Canney and Thompson were on their way to deliver cocaine to Cicero on the day of their arrest.
. Thompson also argues that the district court erred in allowing the government to adduce evidence that his Dodge Truck had a license plate which read "DIRRTY,” because that evidence was irrelevant and unfairly prejudicial. As he did not object to this evidence in the district court, we review only for plain error.
See United States v. Vazquez-Rivera,
