WEST POTTSGROVE, Pa. (WPVI) -- Police in Montgomery County now say they're searching for a second driver in connection with a fatal crash early Saturday.
Witnesses tell police a black Dodge Challenger was racing a 2007 BMW on eastbound Route 422.
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Then, the BMW slammed into a tree in West Pottsgrove Township.
Two passengers died, and the driver is in critical condition.
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Police say the Challenger had fog lights and Delaware plates.
It's believed the driver of the Dodge stopped briefly at the crash scene, then drove away.