Mexican President Claudia Sheinbaum said she was unaware of the operation and demanded an explanation.

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.

Mexican President Claudia Sheinbaum said she was unaware of the operation and demanded an explanation.

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.