Colorado Springs firefighters are assisting with a brush fire that is burned around 326 acres by a residential area in Garfield County, according to officials.

A Colorado Springs Fire Department brush 3 engine and a three-person crew arrived Thursday night to assist in the efforts to contain the blaze, which broke out earlier that day, near Rulison, according to a Friday news release from the Garfield County Sheriff’s Office.

Named the Hilltop Fire, it spread quickly due to heat and wind conditions and has claimed a home and an RV, according to initial reports from the office. As of a Friday afternoon update, the fire was under 40% containment.

Law enforcement issued a mandatory evacuation order for 20-25 houses in the immediate area, and a pre-evacuation order was also issued for residents within  a mile of the blaze or two miles of the intersection of County Road 320 and County Road 309.

Evacuated residents were directed to the Garfield County Fairgrounds in Rifle or the Parachute Rodeo Grounds to receive assistance.

The fire has moved east and south from its original point, officials said. Air support and on-the-ground firefighters have been working to contain the fire. The cooler nighttime air and calming winds are expected to aid in the fire control as well.

Several wildfires across western Colorado were reported this week, including the Horse Draw wildlands fire that broke out Thursday afternoon. Burning north of Highway 40 near milepost 20, the blaze was at least 800 acres in size but has been mostly extinguished, according to the Eagle County Sheriff’s Office.