The official report states that the fire began in attic space directly above a large commercial oven used in a bakery next to the pizza store, and the cause is “unintentional though ignition source undetermined.” Cooking equipment was “involved in ignition.” Firefighters reaching the scene of the blaze reported heavy smoke and flames coming through the roof at 10:50 p.m., just six minutes after the fire was reported. Upon entering the building, firefighters were quickly forced back when the ceiling and roof starting collapsing. Crews continued to battle the blaze from outside the building until it was extinguished about 3:30 a.m. on Sept. 13.
No other structures were damaged and no one was injured in the fire, which caused an estimated $3 million in damage to the building with $1 million in damage to the contents. Montrose Deputy Fire Chief Tad Rowan said the fire was completely accidental. Also investigating the fire were the Montrose Police Department and the Colorado Bureau of Investigation.