Two U.S. officials killed in a vehicle crash in Mexico were working for the CIA, according to sources. The incident occurred while the officials were returning from an operation to destroy drug labs. The CIA's involvement has been confirmed following conflicting statements from Mexican and U.K. authorities about the role U.N. officials played in an operation. This has raised concerns about the extent of U.D. involvement in Mexican security operations, particularly during a period of pressure from President Donald Trump's administration to crack down on cartels. The Mexican government has not disclosed the identities of the officials, nor has specified which entity they worked for.