GRANBY, Colo. -- Police said the man who rampaged through a Colorado town in a bulldozer apparently killed himself.

He was found dead Saturday morning after a SWAT team cut into the machine with a blowtorch. Police said it appears he shot himself.

Authorities said the muffler shop owner plowed the bulldozer covered with makeshift armor into several buildings on Friday after a dispute with city officials.

He damaged at least six buildings on Friday, including the town hall, before the bulldozer ground to halt at a warehouse. No one was injured.

City officials say he was angry over a zoning dispute.