Mexico City: Two US government employees were shot and wounded in an attack on their vehicle south of Mexico City on Friday, a law enforcement official said.
The two were riding in an armoured US embassy vehicle when they came under fire on a highway leading to the city of Cuernavaca.
The official, speaking on condition of anonymity, said both were hospitalised, one with a wound to the leg and the other hit in the stomach and hand.
The official said the wounded were not DEA or FBI agents. The US embassy had no immediate comment.
A Mexican Army official said the SUV with diplomatic plates was found riddled with bullet holes after a report about a shootout on the highway. The Army official was not authorised to be quoted by name. He said a Mexican Navy captain was also in the vehicle, but was not injured.
The Toyota sport utility vehicle was riddled with bullets, most concentrated around the passenger-side window, indicating possible involvement by experienced gunmen.
Attacks on diplomatic personnel are extremely rare in Mexico.
In 2011, one US Border Patrol agent was killed and one wounded in a drug gang shooting in northern Mexico.