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PHILADELPHIA (CBS) — More than 30 people have been injured following a crash involving a Route 13 trolley, a CCT Connect vehicle and another car in West Philadelphia.

The accident happened at 41st Street and Chester Avenue, shortly after 11:30 a.m.

The extent of the injuries is not known at the time.

There is no word on what led to the crash.

Stay with CBSPhilly.com for this developing story.