Three juveniles have been charged with felony arson for a fire that destroyed a vacant mill in Southern Maine.

According to the Portland Press Herald, investigators with the State Fire Marshal's Office used drone and security footage to analyze the path of the fire that consumed the Stenton Trust Mill building in Sanford last month. More than 100 firefighters worked to extinguish the fire at the 300 thousand square-foot mill. It was a scary fire, with crews concerned that the building would collapse.

The youths have denied setting the fire. They're scheduled to appear in court today.