Two U.S. officials who died in a crash in Mexico after they left a drug raid worked for the CIA, unnamed sources told media outlets Tuesday.

Two employees of the U.S. Embassy in Mexico and two Mexican law enforcement officers were killed in a car crash over the weekend in Chihuahua.

The two died in a car crash after a Mexican-led operation to destroy a clandestine drug lab.

Two U.S. officials who died in a crash in Mexico after they left a drug raid worked for the CIA, unnamed sources told media outlets Tuesday.