This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

A motorist was killed in a car-to-car shooting on a Southern California highway that authorities are investigating as a possible case of road rage.

A man driving a pickup truck was struck by gunfire around 5 p.m. Monday on southbound Interstate 15 in Ontario, east of Los Angeles, the California Highway Patrol said.

The pickup veered to the left and may have struck a light pole before coming to a rest, the San Bernardino Sun newspaper reported. The driver was dead when CHP officers and paramedics arrived, the newspaper said. He was not immediately identified.

Investigators have not released a description of a possible suspect vehicle.