Mexico warns US involvement in anti-drug operation should not be repeated

Claudia Sheinbaum says Mexico was not aware of US participation until four officials were killed in car crash

Claudia Sheinbaum, Mexico’s president, said on Monday that her government told the United States, in a diplomatic note, that the unauthorized presence of US officials at an anti-narcotics operation in the northern state of Chihuahua should not be repeated.

The incident came to light after two US officials, along with two Mexican officials, were killed in a car crash on 19 April after the operation. Sheinbaum has said the federal government was not aware of the participation of the US officials, who were widely reported to be CIA officers.