Shooting at San Francisco UPS warehouse reportedly leaves at least 2 dead

Police are responding to a shooting at a UPS warehouse in San Francisco, according to multiple news reports, citing local law enforcement.

NBC News is reporting that at least two people died and three more were injured in the shooting, according to local law enforcement.

Authorities instructed residents to avoid the scene of the shooting near the Bayshore Freeway in the Portero Hill neighborhood, about 2.5 miles outside downtown San Francisco, according to the Associated Press.

This story is developing.