According to police, the shooting happened just after 3:30 p.m. Tuesday near Uber Street and Montgomery Avenue in North Philadelphia.
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"That's where we found seven spent shell casings from a semi-automatic weapon," said Philadelphia Police Chief Inspector Scott Small.
The intersection is just blocks away from where Temple police officer Christopher Fitzgerald was fatally shot on Saturday night.
Police said two teens, ages 13 and 17, were injured in the double shooting. The 17-year-old male was shot four times in the leg and was taken to Temple University Hospital in critical condition, police said.
A 13-year-old female was shot one time in the right forearm, police said. She was also taken to Temple University Hospital and was placed in stable condition.
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Surveillance video captured the horrified reactions.
Authorities said at least one witness told them it was a drive-by shooting.
"A gray vehicle was traveling east on Montgomery when someone fired shots out of the front door passenger side window," said Small.
Police are unsure if either teen was targeted.
The 6abc Data Journalism Team team found since the beginning of this school year, 112 children between the age of 5 and 18 have been shot in Philadelphia, and 14 of them died.
No arrests have been made in connection to the shooting but police are looking for a gray sedan. Authorities say both men inside were wearing dark-colored clothing and had masks covering their faces.
The shooting happened as the family of Ofc. Fitzgerald was gathered at a memorial.
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At first, there was confusion, then police escorted the entire family away.
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The family members had only been at the memorial site for about five minutes before the gunshots were heard.
Ofc. Fitzgerald was fatally shot while trying to stop a robbery at North 17th Street and West Montgomery Avenue in North Philadelphia. He was 31 years old.
Miles Pfeffer, 18, is charged with murder in Officer Fitzgerald's death and is being held in Philadelphia's Curran-Fromhold Correctional Facility without bail.