A fatal crash closes Highway 101 in Mendocino County late Monday night. The California Highway Patrol says a pickup, a semi, and another vehicle were involved in the collision south of Leggett. One person was killed, while two others were treated for minor injuries and at least two people were unhurt. Both directions of the highway were shut down as emergency crews responded. Caltrans and investigators worked through the night to clear the wreck and determine what led to the crash.