PHILADELPHIA (CBS) — There are no reports of any serious injuries after a crash involving a school bus in Philadelphia Wednesday morning.

The accident happened in the southbound lanes of the Roosevelt Boulevard near the Ridge Avenue exit.

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Chopper 3 HD was over the scene where it appeared a white sedan rear-ended the back of a yellow school bus.

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Authorities say there were nine students on the bus at the time of the crash, but they were not injured.

It was not immediately known if anyone in the car was injured.

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The crash remains under investigation.