WELD COUNTY, Colo. (CBS4) – The Weld County Sheriff’s Office responded to reports of a fire at an oil site Thursday afternoon.

The site is located near Highway 392 and Weld County Road 71.

READ MORE: COVID In Colorado: Rural Hospitals Worry About Staffing As Vaccination Deadline Approaches

(credit: CBS)

Deputies say they found three maintenance workers with burns. Two of those vicitms were air lifted to a hospital while the third victim was taken by an ambulance.

READ MORE: Focus On New Moms, Pregnant Women In Colorado Naloxone Project Expansion

Investigators say this appears to be accidental at this point. Two vehicles were also burned.

MORE NEWS: New Video Emerges Of Aurora Police Stop, Triggering Internal Investigation: 'I Was Petrified Of That Gun'

The Briggsdale Fire Department is now investigating. Officials say the fire is now out.