The Yuma Fire Department received reports of a trailer fire Sunday afternoon in the 500 block of South 12th Avenue. Firefighters found a small travel trailer fully engulfed in fire in the rear of a residence at 572 South 12th Avenue. The fire was quickly extinguished without damage to the primary residence. There were no occupants home at the time of the fire and there were no injuries. The cause of this fire was undetermined due to the extent of the damage.