PHILADELPHIA (CBS) — Six people, including four students, suffered minor injuries after a school bus and SEPTA bus collided in Philadelphia Wednesday morning.

The crash happened at about 8:10 a.m. at Fairmount Avenue and Warren Street in West Philadelphia.

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According to a SEPTA official, a school bus and a SEPTA bus were involved in a crash.

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Authorities say four children on the bus and two people on the SEPTA bus suffered minor injuries. The injuries are not considered life-threatening.

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The cause of the crash remains under investigation.