A bus crash tonight claimed the life of a young mother as she was trying to cross the street, police said.

Just before 7:30 p.m., police were called to the scene of a SEPTA bus crash on Washington Avenue near 15th Street in South Philadelphia, said Captain Anthony Ginaldi.

At the scene, officers found an 8-year-old boy trying to rouse his mother, who was lying in the middle of the street.

The woman, 29, was trying to cross Washington Avenue with her son and a third person, a 32-year-old man, running to beat the bus as it was turning, said Ginaldi.

She didn't make it, and was hit head-on and dragged under the bus's wheels.

Medics pronounced her dead at the scene. The boy was taken to Children's Hospital of Philadelphia in stable condition. His injuries are not life-threatening, said Ginaldi.

The man with the family, a special-needs patient, was not injured. He's currently being interviewed by investigators.

No passengers were on the bus at the time of the crash. The driver wasn't injured.

Police are continuing their investigation, and are reviewing footage from the bus's on-board cameras.