An alleged cocaine trafficker wanted for questioning in the slaying of a U.S. drug agent was placed in the maximum-security federal prison at Marion, Ill., authorities said Wednesday, after being picked up in a helicopter raid before dawn at his home in Honduras.

Juan Ramon Matta, 43, was lodged in a cell at Marion, which the federal prison system uses to house its most dangerous criminals, on Tuesday night, said Kathryn Morse, a spokeswoman for the U.S. Bureau of Prisons.Matta was arrested before dawn Tuesday and turned over to U.S. marshals after an airborne police raid on his home in Tegucigalpa, Honduras, authorities said.

In addition to drug charges, authorities want to question him about the death of Enrique Camarena Salazar, a U.S. Drug Enforcement Administration agent, according to a U.S. law enforcement source, speaking on condition of anonymity.

Matta arrived at Kennedy International Airport early Wednesday on a flight from San Juan, Puerto Rico, said Lt. Kevin Ward of the Port Authority police. He was accompanied by three federal marshals who put him aboard a government jet that took off for an undisclosed federal prison, Ward said.

U.S. marshals on duty in New York and Washington overnight would not comment on the case. Warrants charge Matta with escape from federal custody, conspiracy to smuggle cocaine, possession with intent to distribute cocaine, engaging in a continuing criminal enterprise and other crimes.