Updated

Mexico's national security commissioner says 14 federal police officers are being tried on charges of using excessive force in a 2012 shooting attack that wounded two CIA officers in a U.S. Embassy vehicle.

Monte Alejandro Rubido says there is no evidence the police acted on orders from an organized crime gang. He told reporters Wednesday the attack on the diplomatic vehicle was a case of mistaken identity.

Mexican officials have long said the federal police group was investigating a kidnapping when it encountered the U.S. agents and a Mexican marine captain and opened fire on their armored SUV. Officials say the plainclothes officers reported they thought they were pursuing kidnappers on a rural road.

The shooting occurred in an area just outside Mexico City where a drug gang was active.