COLORADO (KRQE) – Authorities in Colorado are investigating reports of a firefighting plane crash. Tuesday night, crews are out searching the area in Larimer County, northwest of Denver, after the single-engine air tanker failed to return to the airport and dropped off the radar.

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The aircraft which belongs to Colorado Fire Aviation is equipped with technology allowing pilots to see the terrain through smoke and clouds. The crew was conducting a nighttime aerial drop, a practice that is new this year in Colorado. Fire crews are in the area fighting the 130-acre Kruger Rock Fire.