No evacuations are in place, but officials expect there to be a structure threat in around 20 minutes. The fire is spreading rapidly, fire officials said.

Little Mountain Fire initially started 2:44 p.m. Jan. 15 in San Bernardino County. After being active for 16 hours, it has burned 34 acres. By Thursday morning, the fire crew successfully encircled the entire perimeter of the fire in control lines. However, the cause is still being investigated.

A man has been arrested in connection with a fire that erupted in the San Bernardino Mountains on Wednesday afternoon, while multiple wildfires continued to burn in Southern California and the region was under a red flag warning.