TUCSON (KGUN-TV) - It is not every day the man who pulls the trigger also pushes 911 on his phone.
But Tucson police say the shooter in Tuesday morning's midtown murder may have acted in self-defense against an armed robber.
"Stand your ground" is the self-defense law put under the national spotlight when a Florida jury in July found George Zimmerman not guilty in the shooting death of Trayvon Martin.
The midtown murder police investigated overnight may never make it to trial.
"There's indications that this was entirely a self-defense issue, so we don't anticipate charges will be brought against the male who fired his weapon," Sgt. Maria Hawke told 9 On Your Side.
Just before 1 a.m. Tuesday morning, police say a 28-year-old man was sitting alone in his car and waiting for a friend in the 400 block of E. Navajo Road, near Prince and First.
Another called pulled up in front and one of the passengers got out. Police say he approached the car, pointed a gun and demanded money.
"Fearing for his life, he took out his gun and proceeded to fire at the male multiple times," Sgt. Hawke said.
Police have identified the armed robber who died in the street as 25-year old Gabriel Jackson. He had previous run-ins with the law, including serving two years for burglary.
Police have not yet released the name of the shooter, but say he cooperated with detectives after calling 9-1-1.
"It is somewhat unusual to have a person who's involved in an altercation call 911 to advise us that they actually just shot somebody," says Hawke.
When it comes to self-defense in Arizona, criminal defense attorney Mike Piccarreta says the law treats your car like your home.
"It's got to be a situation where you reasonably believe the person is trying to enter your vehicle to commit some type of criminal act," Piccarreta told 9 On Your Side. "Then you're permitted to defend yourself. You do not have to retreat."
Police are looking for three other men who were at the scene and fled in a white sedan. If you know anything, please call 9-1-1 or 88-Crime.