Authorities Tuesday identified a motorist who was killed in a collision with a truck in the Lancaster area.

The crash occurred about 9:40 p.m. Monday on Sierra Highway south of Avenue D, the California Highway Patrol reported.

The fatally injured man was identified by the CHP as Eric Buchanan Sr., 55, of Lancaster.

Buchanan was driving a 2002 Chevrolet Monte Carlo south on Sierra Highway at about 55-60 mph when, “for an unknown reason (he) allowed his vehicle to veer to the right, onto the dirt shoulder,” the CHP reported.

“(Buchanan) then veered to the left, resulting in his vehicle crossing the southbound lane of Sierra Highway into the northbound lane, directly into the path of (a) Freightliner tractor trailer,” the CHP reported.

The truck driver was not injured, the CHP reported.

“Drugs or alcohol appear to have been a factor in this traffic collision,” the CHP reported.

Anyone with information on the crash was urged to call the CHP Antelope Valley Area office at 661-948-8541.

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