POMONA (CBS) — A Foothill Transit bus and two cars collided Friday in Pomona, injuring seven people.

The crash at Mission Boulevard and Dudley Street was reported at 4:56 p.m., said Inspector Quvondo Johnson of the Los Angeles County Fire Department.

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Three people on board the bus suffered serious injuries while four others had minor injuries, said Sky2’s Stu Mundel, who was reporting overhead.

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Johnson said a second bus was sent to pick up the remaining passengers.

The cause of the crash was not known.

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