One person was injured Monday in a three-vehicle collision involving a tractor-trailer and two sedans on Interstate 15 just south of Temecula.

The collision happened at 1:05 p.m. on northbound I-15 at Rainbow Valley Boulevard, according to the California Highway Patrol.

The agency said that a Volvo, Chevrolet Spark and big rig impacted at the location, though the specific details were not immediately available.

The trucker and two motorists stopped in the slow lane.

Riverside County Fire Department crews reached the location roughly 15 minutes later and found an occupant of one of the cars with minor injuries.

No one was trapped.

The victim, whose identity was not disclosed, was taken to a regional trauma center for treatment.

The slow lane remained blocked as of 1:25 p.m.

CHP officers were investigating the cause of the collision.