One person was killed and several others were injured during a shooting at a graduation party in southwest Philadelphia, police said.
The shooting began after 10 p.m. Sunday at a party with about 60 people in attendance at 70th and Buist avenues, Philadelphia Police Commissioner Richard Ross told media.
At least eight people were shot, he said, UPI reports.
"We are trying to confirm whether or not it is eight or nine," he said.
Four of the victims were juveniles between 15 and 17 years old, sustaining gunshot wounds mainly to their legs, he said.
Four adults, all in their 20s, were also shot, one of whom was pronounced dead at the hospital, he said.
The investigation is preliminary and not much else is known, including if there was more than one shooter, he said.
The shooting concluded a weekend of violence in the city that saw 16 shootings leave at least four people dead and 26 injured.