Officials say the structured collapsed into the foundation.
Fire 
House Fire at Keys Chapel Rd and Coppermine Rd. (Photos from Frederick County Fire & Rescue Services)
Frederick, Md (KM) Fire destroyed a house east of Libertytown on Tuesday afternoon.
The Frederick Scanner Facebook page says units were dispatched just before 12:00 PM to Keys Chapel Road and Coppermine Road where fire fighters found a house fully involved in flames. They saw heavy fire on the second floor, and requested a tanker task force to bring in water, and the Rapid Intervention Dispatch for additional manpower.
Crews operating inside the home had to evacuate following an explosion; all personnel were accounted for. Fire fighters had to pull back 25 feet from the house while putting out the flames, and Keys Chapel Road was closed. .
The fire was eventually brought under control, and some units were released just after 1:15 PM
The Frederick Scanner says the fire was reported extinguished just before 4:45 PM.. The structure collapsed into the foundation. No injuries were reported,
The owner was not at home at the time of the fire.
By Kevin McManus