Police say they found a phone playing a YouTube instructional video on how to steal cars at the scene of an attempted car theft in Phoenix.

Phoenix police report that on August 8, near 31st Avenue and Indian School Road, a suspect shot a car owner as he was trying to prevent him from stealing his car.

Police say the suspect, 25-year-old Juan Jose Zuniga, and his girlfriend were sleeping in the victim's backyard.

The victim was alerted that Zuniga was attempting to steal his car and went out to confront him. After they argued and struggled, Zuniga reportedly got out of the 1999 Ford Mustang and shot the victim twice.

A neighbor told ABC15, "Suddenly this guy came to the door, and he tried to open it, and he was yelling, 'Help me, help me, I got shot.'"

When police arrived, they saw a cell phone sitting on the roof of the Mustang. On the phone, an officer saw a YouTube video playing, showing "how to steal a car."

After the shooting, Zuniga ran from the area and got on a bus. Police caught up with him near 35th and Northern avenues.

Zuniga claimed he shot the victim in self-defense as the victim was armed, but another witness told police the victim was only carrying a jug of milk.

Zuniga is being held on a $250,000 bond on charges of aggravated assault.