PHILADELPHIA (AP) - A Pennsylvania state police trooper has been shot in the shoulder after a fiery crash on a Philadelphia highway.

Officials say three suspects are in custody and the trooper has been hospitalized in stable condition.

Philadelphia Police Department spokeswoman Leeloni Palmiero says the shooting happened after a chase along Interstate 676, which runs through the center of Philadelphia. The suspect's vehicle rear-ended a school bus, causing both vehicles to catch fire. The suspect fled and shot at the trooper.

State police say the suspected gunman and two others are in custody. A police vehicle near the scene appeared to have bullet holes.

Pennsylvania State Troopers Association (PSTA) President Joseph Kovel issued the following statement this morning regarding today's shooting:

"This morning we are reminded of the sacrifice police officers are ready to make every time they put on their uniform. Our wounded brother is a hero, and we're relieved to learn he will recover from his injuries."

No further information is available at this time.