DIAMOND BAR — Officials are seeking a hit-and-run driver who caused a multi-car wreck early Sunday after driving at high speed in the wrong direction on the 60 Freeway.

No major injuries were reported in connection with the crash, which took place shortly after 4:10 a.m. on the eastbound freeway near Diamond Bar Boulevard, California Highway Patrol Officer Ed Jacobs said.

Authorities first received a report from a driver at Phillips Ranch Road of, “an unknown vehicle westbound in eastbound lanes, doing about 75 mph in the No. 1 lane,” Jacobs said.

Minutes later, a CHP officer who was running a traffic break to stop the flow of cars on the eastbound freeway in response to the report came across the crash scene, about two miles west of where the wrong-way driver was first reported, officials said.

Three cars had crashed into each other, resulting in only property damage, Jacobs said, and a fourth car apparently swerved and became involved in a minor-injury solo-car crash.

The wrong-way driver who started the chain reaction ran from the scene after the crash and was not immediately found, officials said. The investigation was ongoing.