Authorities said it happened around 4:45 p.m. on May 11, when three men were walking on the 4700 block of North Broad Street.
They came across another group and "appeared to have a verbal dispute" before one man pulled out a handgun and opened fire, police said. The gunfire struck a woman about a block and a half away and she later died from her wounds, according to investigators.
Police have released video from the scene.
Anyone who can identify the suspects is asked to call 215-686-8477 or submit a tip through the PPD website. A $20,000 reward is offered.
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