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The Boston Globe

Nation

Mountain manhunt for ex-cop accused of killing 3

LOS ANGELES — A fired police officer who threatened to bring ‘‘warfare’’ to the Los Angeles Police Department went on a shooting rampage that left a policeman and two others dead and set off an extraordinary manhunt Thursday that put Southern California on edge, led hair-trigger officers to mistakenly shoot at innocent citizens, and forced police to guard their own.

The search for Christopher Dorner had three states and Mexico on alert before shifting Thursday afternoon to the snowy mountains around Big Bear Lake, about 80 miles east of Los Angeles, where police found his burned-out pickup truck and tracks leading away from the vehicle.

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