PITTSBURGH — Authorities are investigating a shooting inside a Pittsburgh bar that claimed the life of a 25-year-old man.

Officials said a passer-by told an officer working a detail at a nearby South Side bar that shots were fired inside the Rowdy Buck bar shortly after 12:30 a.m. Sunday.

Officers found a man on the sidewalk with what appeared to be multiple gunshot wounds to the abdomen. An officer tried to revive him until paramedics arrived, and more officers were sent as a large crowd began to gather.

Police and the Allegheny County medical examiner’s office said the man, Dahrique Smith of West Mifflin, was pronounced dead shortly after 1 a.m. at UPMC Mercy.

Investigators said they determined that the shooting occurred inside the bar. The violent crime unit is investigating.