LAS VEGAS (AP) — The Clark County coroner’s office says a man killed by Las Vegas police after a domestic disturbance call to 911 died from a penetrating gunshot wound to the chest.

The coroner’s office identified the man Friday as 23-year-old Rafael Olivas.

A spokeswoman for the office would not say how many times Olivas had been shot.

Police say officers were responding to the domestic disturbance call just before 7 a.m. on Thursday.

A woman told police she was having an argument with her son.

Police officers found Olivas carrying a butcher knife on a street near his home. Police say Olivas continued to approach the officers after he was told to stop.

The officers fired at the man. He was taken to a local hospital, where he was pronounced dead.

Copyright 2011 The Associated Press.