It happened just before 5 p.m. at the intersection of South Spring Garden Street and Bannockburn Avenue.
Police say a 2-year-old boy was struck by a vehicle, which took off.
The boy was flown to Children's Hospital of Philadelphia with serious, but nonlife-threatening injuries.
The vehicle is described as a dark gray or black SUV heading southbound on North Main Street.
------
Report a correction or typo