SAN BERNARDINO ( — Authorities Saturday continued to investigate the cause of a fast-moving brush fire in San Bernardino County.

The so-called Mills Fire broke out around 2:15 p.m. Friday near Mill Creek Road, prompting evacuation orders for dozens of homes. Residents have since been allowed to return home.

READ MORE: 3 Children Stabbed To Death In Reseda Apartment; Mother Captured In Central California After Going On The Run

The fire scorched at least 350 acres in parts of Redlands, Mentone, and Yucaipa. At one point, flames burned dangerously close to structures and damaged one home.

READ MORE: Man in Riverside Barricades Himself Against Police After Shooting His Wife

The California Department of Forestry and Fire Protection (Cal Fire) says the fire was 20 percent contained as of Saturday morning.

MORE NEWS: Couple Reunited With Lost GoPro Camera After Four Years, Thanks To TikTok Users

RELATED STORY: 350-Acre Brush Fire In San Bernardino County Damages Home