From Philly.com

PHILADELPHIA - Authorities say a gunman was shot and killed outside a north Philadelphia bar after an exchange of gunfire with police officers

Officials told WPVI-TV ( http://bit.ly/pWn4mM) that the armed man entered Olga's Sport Lounge in the Hunting Park section of the city shortly before 1 a.m. Saturday.

Police say patrons were able to force the man out of the bar and lock the doors, after which they called 911.

Authorities say that when officers arrived on the scene, the suspect fired at least one shot at them.

Two officers returned fire, and the suspect was killed. No officers were injured.

The name of the man has not been released. Police say the shooting remains under investigation.