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DES MOINES, Iowa — The Des Moines Fire Department responded to a large fire Wednesday morning that heavily damaged a family-owned business.

The fire broke out around 3:00 a.m. at 1244 2nd Avenue in a textile warehouse, just a few blocks north of Mercy Medical Center.

The building is owned by a janitorial products business, Commercial Bag and Supply Co.,. Officials say the building where the fire first started is likely a total loss. An attached building to the north suffered smoke and water damage, and another attached building to the south was not damaged.

It took firefighters more than an hour to put out the blaze. The warehouse was filled with burlap and plastic materials which are highly flammable. The dense smoke and flames created a challenge for firefighters. They say they could only put out the fire while on top of the roof because of the limited access by the other buildings into the warehouse.

Investigators are still on the scene trying to determine what caused the fire. They say no one had been in the building since around 4:15 p.m. on Tuesday. Damage to the buildings is estimated at $400,000.

Commercial Bag and Supply Co. was founded in 1948 and employes 10 people.