The two Americans who reportedly worked for the CIA died in a car crash after a Mexican-led operation to destroy a drug lab.
Mexican government says it is seeking details after incident raises questions about US activities on its territory.
The death of US officials following an operation to dismantle a drug lab in northern Mexico is escalating tensions with Washington, as President Claudia Sheinbaum insists her government was unaware of their involvement. At a news conference, Sheinbaum said Mexican security officials involved in the operation were never told about the presence of foreigners, which she described as a clear breach of security protocols. A person familiar with the matter confirmed that the two US nationals worked...
The presence of US officials in a law enforcement convoy raises questions about respect for Mexico's sovereignty.