CASTRO VALLEY -- The California Highway Patrol is investigating a fatal collision that occurred in Lake Chabot Regional Park Saturday.

The crash was reported around 3:25 p.m. on the 9000 block of Redwood Road, according to the CHP, and involved a motorcycle and a vehicle.

It is unknown what caused the crash.

The road was closed for several hours while crews investigated, and reopened around 7:29 p.m.

Check back for updates.

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