FREDERICK, Md. - Fire officials announced the cause of the blaze Thursday morning at the Dairy Maid Dairy was accidental.
Around 5 a.m. Thursday, more than 60 firefighters battled the fire at the warehouse along East 7th Street in Frederick.
Fire crews confirmed that the fire started in an air compressor near a loading dock area of the building. When a second compressor caught fire, it caused an explosion that lead the flames to spread to the roof.
Officials said one employee was inside trying to fight the blaze, but it became too much to handle and he called 911. Fire officials said it took about 15 minutes to extinguish the fire. No injuries were reported.
"It was a large amount of fire in that section of the building. First arriving crews entered the building, they had heavy fire conditions and heavy smoke conditions. They extinguished the bulk of the fire in 15 to 20 minutes and the rest of the time we have been spending here for the last two hours just trying to contain the rest of the fire and hit hot spots on the roof," said Lt. Jeffrey Shippey, Frederick County Division of Fire and Rescue
The cost of damages to the warehouse have yet to be determined.