After a man in Southwest Philadelphia assaulted his girlfriend Thursday, she came back with family members to confront him later that night, police said. That confrontation ended outside the man's home when he pulled out a gun, shot four of the men, and fled the scene, police said Friday.

One of the men died early Friday. The names of the victims and the suspect have not been released.

The shooter remains at large, Capt. John Ryan, head of the Homicide Unit, said Friday afternoon. Police know who he is — since the shooting occurred outside his house — and are looking for him.

The encounter began with what Ryan called a "domestic incident" on the 1700 block of South 58th Street in Southwest Philadelphia. The woman was assaulted by her boyfriend, the father of her children, Ryan said. She was not severely injured and did not report the incident to police, but told her family.

A group of five family members went with the woman to confront the man at his home on the 6600 block of Dorel Street. Ryan said he could not speak to whether any were armed when they arrived.

After "a lot of interaction," Ryan said, the boyfriend "produced a gun and four people were shot."

Police arrived around 9:30 p.m. and took the four men who were shot to Penn Presbyterian Medical Center.

A 23-year-old man was pronounced dead at 4 a.m. Friday, police said. Two of the men, a 22-year-old and 32-year-old, were listed in stable condition Friday. The fourth, a 22-year-old man, was listed in critical condition.