By CBS13 Staff

SACRAMENTO (CBS13) — An investigation is underway into what started a fire at a large homeless camp under Interstate 80.

The fire broke out around 12:45 a.m. Wednesday at the homeless camp along Roseville Road, east of Del Paso Heights.

READ MORE: Video Released Of Fatal Officer-Involved Shooting Of Tahoe Park Resident Who Shot At Authorities

A massive plume of smoke could be seen coming from the area.

Residents say more than a dozen cars that were at the camp were burned.

READ MORE: Coroner Identifies Passenger Killed In Wrong-Way DUI Crash On Highway 99

MORE NEWS: Looting Suspect Accused Of Dozens Of Thefts Arrested In South Lake Tahoe

The fire was eventually brought under control by firefighters. Authorities say one woman who lived at the encampment took herself to the hospital, but no other injuries have been reported.