Big rig overturns on Pomona Freeway

A big rig overturned today on the Pomona (60) Freeway, blocking an on-ramp and one lane during morning traffic and leading to a SigAlert, the California Highway Patrol reported.

The crash was reported at 6:17 a.m. on the southbound Azusa Avenue on-ramp to the eastbound 60, said CHP Officer Francisco Villalobos.

"Injuries were reported, but the [number and] conditions are unknown," Villalobos said.

Villalobos said the truck, which was loaded with some type of paper product, was blocking the on-ramp and the far right lane.

"Thankfully, there have been no reports of fuel leaking or anything like that," he said.

A SigAlert was declared by the CHP at 6:37 a.m. for an unknown duration.

The crash appeared to be a solo-vehicle incident.

An investigation into its cause was underway.