Ambulances responded to reports of a shooting at 5001 Third St. at about 2:35 p.m., the dispatcher said.
The woman was apparently walking into a store near Quesada Avenue and Third Street when she got caught in the crossfire of a suspect who was allegedly shooting at someone else, San Francisco police Officer Eric Chiang said.
A bullet struck the woman’s arm, and she was transported to San Francisco General Hospital for treatment of injuries that were not believed to be life threatening, Chiang said.
Police were still searching this afternoon for the suspected shooter, who was described as a man in his early 20s wearing a gray short-sleeve shirt and black pants.
Anyone with information about the case is encouraged to call San Francisco police at (415) 553-1651.
Saul Sugarman, Bay City News