Investigators are trying to find out how four people were shot in North Philadelphia.
Police said three of the victims were in a car that crashed.
Police identified them inside a car with shooting in the rear window at 15th Street and West Clearfield around 1 am.
Police said one of the victims was 17 years old and the other victims were in their 20s.
Later, a fourth victim appeared later in the hospital.
Officials said all four victims were in stable condition.
This comes at a time when the violence that took place over the weekend in Philadelphia to more than 300 murders during the year.