A vehicle overturned on the 10 Freeway in West Covina Saturday, immediately snarling traffic but no injuries were reported.
The crash on the eastbound side at West Pacific Avenue, was reported at 9:30 p.m., according to the California Highway Patrol.
The middle and two far right lanes were blocked, as the vehicle crashed in the very far right lane, the CHP reported.
West Covina firefighters went to the scene but no ambulances were called and no SigAlert was needed for stalled traffic, according to the CHP.
At least two vehicles needed towing and the entrance ramp from West Covina was shut down for a time, except for the tow trucks, the CHP reported.
The cause of the crash was under investigation.