Police officers shot a 13-year-old Utah boy with autism after his mother asked for help getting him hospital mental-health treatment.

The boy's mother, Gold Barton, said her son started having an emotional episode while she was at work.

She then drove home and dialed 911 to request a crisis intervention team (CIT) officer because her son, who has Asperger's syndrome, was having a mental episode.

The mom said:

"I said, 'He's unarmed, he doesn't have anything, he just gets mad, and he starts yelling and screaming.'"

"He's a kid. He's trying to get attention. He doesn't know how to regulate."

"They're supposed to come out and be able to de-escalate a situation using the most minimal force possible."

Instead of calming the little boy, the responding officers stormed through the front door, screaming 'get down on the ground' before firing several shots.

Bodycam footage shows the officers chasing the boy down an alley after they arrive at his home. They then yelled at him to get on the ground.

The boy apparently ignores them and walks away. Moments later, he then falls to the sidewalk after a series of 11 shots, moaning:

"I don't feel good. I don't feel good."

Following the shooting, Barton said she thought that her son was dead. She added that the officers didn't immediately tell if he was dead or alive.

She recalled:

"I heard the guns and the yelling and the guns. And then I sat there in my car for what felt like a long time. I was waiting for someone to walk over to me because I didn't know what just happened."

"And I was like OK, um, OK … they just unloaded a whole clip in my son, and probably he's dead because he's so small."

The boy suffered injuries to his shoulder, both ankles, his intestines and his bladder.

As if shooting him wasn't bad enough, the officers then handcuffed the injured boy.

Before the incident, Barton had warned cops that her son said earlier that day that he had a gun. And he had threatened to shoot her male coworker and break windows in the house.

But she told officers she thought it was just a BB gun or pellet gun.

In the bodycam footage, there's no indication the boy had a gun.

Barton had also told the officers her son is afraid of cops, doesn't like them and will most likely run away.

She said:

"He sees a badge, and he automatically thinks, like, you're going to kill him, or he has to defend himself."

The mayor of Salt Lake City, Erin Mendenhall, has called for a thorough investigation into the incident.