Mexican authorities continued to contradict themselves over the role of two CIA agents in a counternarcotics operation in northern Mexico and the extent to which Mexico’s federal government was aware of the U.

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 CIA case officers were killed on Sunday in a car crash in Mexico, Mexican officials said.

Mexico's president orders an investigation after a crash killed two U.S. officials and two Mexican officials linked to a clandestine drug lab operation.

The U.S. spy agency has significantly expanded its international antidrug work under President Trump and CIA Director Ratcliffe.