Jared Rosskelley, 31, was listed in serious condition at Intermountain Medical Center as of Friday afternoon.
Det. Richardson told ABC4 News that the call came in as an argument at the residence at 5514 South Ridgecrest Drive (3410 West) at 10:18 am. Richardson says the officers encountered Rosskelley in the driveway with a handgun. He exchanged words with the officers and when they felt threatened they opened fire. The UPD officers then immediately administered first aid and Rosskelley was taken away in an ambulance.
Unified Police obtained a search warrant at 1:30 pm and were still processing the scene as of 5:30 pm.
Sheriff Jim Winder told media members that police had been called to disturbances at the house before.
A neighbor who spoke to ABC4 News described Rosskelley as a "Juggalo", a follower of the rap group Insane Clown Posse.
Another neighbor who wanted to be anonymous said she had seen Rosskelley walking barefoot and acting strangely on Thursday.
"He was wearing like, a costume with a clown mask walking around," the woman said. "I had never seen him before...Maybe he had some kind of mental disability. He just looked like somebody you don't want in your neighborhood."