The chase and attack stretched for miles along the Mexico-Cuernavaca federal highway.
The surveys conducted by personnel from the Attorney General's Office (PGR) and the reconstructions determined that the lives of the three victims were always at risk during the attack, as the agents of the Federal Police never stopped shooting and opened fire with intent to deprive the U.S. agents and the Mexican Navy officer of their lives. ... The U.S. agents and Mexican Navy officer were unarmed.
According to documents obtained and the decision regarding an injunction brought by lawyers for the federal police, it was confirmed that, in the attack, Mexican police agents traveled in private vehicles, used their official weapons (rifles and pistols), but did not wear their uniforms or bullet proof vests that would identify them.
The report also confirms that the policemen, who are charged with attempted murder and damage to property, did not stop shooting at the vehicle in which the U.S. agents and the Mexican were traveling until one of their commanders arrived at the scene.
The level 6 armor of the vehicle had failed.
Source: La Jornada: Gustavo Castillo García-Translated Mexico Voices, Reed Brundrage