Worcester Firefighters were called to Dario Diesel on Southwest Cutoff after a call was received for a fire in the parts department.
Companies arrived to find heavy smoke from the large 1 story commercial building.
As crews opened overhead doors at the repair shop thick, heavy smoke started pumping out. Not long after heavy fire started venting out of the building.
The fire reached 3 alarms and companies remained on scene most of the night.
