According to sources familiar with the operation, the raid of a clandestine drug lab involved four CIA agents, raising questions about the scope of the agency's activity in Mexico.

Two U.S. officials killed in a vehicle crash as they returned from destroying a clandestine drug lab in northern Mexico over the weekend were working for the CIA, according to a U.S. official and two ...

Mexican President Claudia Sheinbaum demands answers and criticizes U.S. involvement without federal approval.