LAS VEGAS (KLAS)– Police are investigating a homicide that was reported Wednesday night in the southwest valley.

According to Las Vegas Metropolitan Police Department, a woman called the police at 9:23 p.m. to report her boyfriend was dead. Police said the incident occurred in the 6200 block of Whitelion Walk Street near Grand Canyon Drive and Patrick Lane.

Metro Lt. Jason Johansson said detectives believe the couple got into a fight and the man pulled out a knife and the woman, reportedly in her 40s, pulled out a gun and shot him.

The man, identified as 58-year-old John Welch, was pronounced dead at the scene. Johansson said he had apparent gunshot wounds.

Police are trying to determine if the shooting was in self-defense. The woman was not taken into custody as of Thursday morning.

The woman’s teen daughter was in the home at the time of the shooting.

Those experiencing domestic violence or abuse can find a list of online and telephone resources through this link.