Caro Quintero

Caro Quintero

REUTERS UNDATED FILE PHOTO - Mexican drug lord Rafael Caro Quintero is shown behind bars in this undated file photo. Quintero won an initial appeal against his conviction and 40 year sentence for the 1985 murder of U.S. DEA agent Enrique Camarena. Quintero will stay in jail while prosecutors appeal against the ruling

Mexico arrests drug lord Caro Quintero, wanted for killing US agent