A tour bus with three dozen passengers on board ran off the freeway in Baldwin Park early Monday, authorities said.
There were no immediate reports of fatalities from the wreck that occurred about 4:36 a.m. on the westbound 10 Freeway near the Baldwin Park Boulevard offramp.
"We have a bus off the road, still on its wheels," said California Highway Patrol Officer Christian Cracraft.
It was not immediately clear if any of the 37 passengers on board were injured. All of them had been taken off the bus, according to the CHP.
No lanes of the freeway were blocked, Cracraft said.