SANTA ANA – The Orange County District Attorney’s Office has determined that there is not enough evidence to prove that two police officers committed a crime when they shot and killed a Santa Ana man during an apparent struggle.

DA investigators determined that they are unable to prove beyond a reasonable doubt that Santa Ana Officers Saul Esquivel and Dorin Buchanan acted criminally when they shot and killed David Gaeta Contreras, 33, on Nov. 6, 2016, according to a letter sent Tuesday to acting Santa Ana Police Chief David Valentin.

A car stop turned into a physical altercation between Contreras and the two officer, the letter says, culminating with Esquivel getting struck in the leg with a Taser and both officers firing gunshots.

The officers declined to speak to DA investigators.

A woman who had been riding with Contreras in the stolen vehicle told the investigators that she and Conteras had smoked methamphetamine several hours before the encounter, the letter says.

Contreras ignored the officers’ commands to keep his hands in the air and not move, she said, and he instead “socked” one officer.

The woman walked away before the shooting began, the letter says, but said that before she left Conteras was “resisting arrest.”

DA investigators also interviewed a woman standing in a nearby front yard when the gunshots were fired, the letter says, and she reported seeing an officer and Contreras “fighting on the ground” and then hearing three gunshots.

An autopsy determined that one bullet fired by Esquivel struck Contreras, along with two bullets from Buchanan’s gun. A blood test confirmed the presence of methamphetamine in Contreras’ system.

The report does not address who fired the Taser probe that struck Esquivel.

Prosecutors indicated that while the DA has closed its investigation, the probe could re-open if more evidence becomes available.