Police have identified the officer who shot U.S. Army Sergeant William Smith.

ABC-7 is learning more about the deadly shooting involving New Mexico State Police, that happened a week ago in Las Cruces. Police have identified the officer who shot U.S. Army Sergeant William Smith as Officer Michael Williams.

Smith’s family says smith suffered from post traumatic stress disorder, after serving overseas. The family alleges police knew smith suffered from post-traumatic-stress syndrome during the standoff. Police said after hours of negotiating officers were forced to shoot him because he pointed a gun at officers.

The entire ordeal started off when officers said Smith led them on a high speed car chase on Interstate 10, officers said Smith was driving more than 130 miles per hour, the chase ended in Las Cruces, but Smith barricaded himself inside the vehicle, leading to a five hour standoff with police.

For the next five hours, officers from LCPD, attempted to negotiate with Smith, police said. According to police, officers failed to negotiate with Smith, and then attempted to deploy tear gas into Smith’s vehicle. As officers approached the vehicle that’s when police said Smith pointed a gun at the officers.

Officer Michael Williams then shot a single round at Smith killing him. According to police investigators found two handguns in Smith’s vehicle a point .22 caliber revolver and a point 40 caliber glock.

ABC-7 spoke to Smith’s father who was in the vehicle with smith at the time of the chase. He said his son suffered from post traumatic stress disorder and notified officers during the standoff.

Smith’s father said he’d have moments of uncontrollable fits of anger. ABC-7 spoke with a doctor with the Ft. Bliss restoration and resilience center, she says one of the very first steps in treatment is recognizing that you have PTSD.

The doctor said it’s not a one size diagnosis, it’s like cancer, there’s different treatments, different levels of severity. The treatments are not easy, there is no magic pill, she added.

ABC-7 contacted the New Mexico State Police Department about the protocol officers follow when dealing with suspects who have PTSD. Sergeant Chad Pearce said officers are trained to deal with suspects mental health issues.