Authorities have said Zambada is a leader of the Sinaloa cartel, which has smuggled billions of dollars worth of cocaine, heroin, meth and marijuana into the United States.

Earlier this month, a jury convicted Guzmán, another Sinaloa cartel leader, of various federal crimes, including engaging in a continuing criminal enterprise, conspiracy to launder drug proceeds and international drug distribution. His lawyers have said he will seek a new trial following a Vice News report alleging juror misconduct during the case.

The allegations implicating one of the Wyoming restaurants were reported by the Star-Tribune in January. The report drew from responses to a sealed civil complaint filed in November.

In their responses, defendants laid out some of the government’s allegations, including that bank accounts belonging to Hilario Montejano-Aleman, the owner of Rodolfo’s Mexican Grill in Cheyenne, were used in drug money laundering.