Xtreme Armor, at 32nd and Marshall in Mattoon, sustained extensive damage in a fire this morning. According to the Mattoon Fire Department, crews responded at 5:42 to find heavy fire showing from the building. Crews entered the building and were able to knock the fire down. There was fire in bays 3 and 4. Most fire and heat damage was contained to those two bays. The office and bays 1 and 2 received smoke and water damage. The business was unoccupied at the time. There were no injuries reported. The cause/origin of the fire remains under investigation.