An overturned big rig in Riverside turned into a mystery when officers got to the scene and discovered the driver was nowhere to be found, CHP officials said.

The truck tipped over about 5:12 a.m. Tuesday, June 30, at the Box Springs Road off-ramp from northbound Interstate 215, a CHP incident log showed.

When officers got to the scene they could not find the driver. They contacted local hospitals asking whether anybody with crash injuries had checked in but turned up nothing, CHP Officer Travis Monks said.

Investigators are working with the trucking company to find the driver. Leaving the scene after being involved in a crash is illegal, Monks said.

The investigation is ongoing and anybody with information can call the CHP at 951-637-8000.

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