Hall County Fire Chief David Kimbrell also says the fire apparently started "in the area of the HVAC (heating and air conditioning) system."
Kimbrell said when the first firefighters arrived, about 10:45 Tuesday morning, they saw smoke pouring from the 2,500-square-foot building.
The storage area of the building was a burned out ruin, with the twisted, blackened remains of office furniture and files strewn across the ground at the side and rear of the building.
A portion of the office was a burned out ruin, with blackened remains of office furniture and files laying outside
A late-morning fire gutted a storage area in a building housing Easy Out Bonding and U.S. Bonds near the Hall County Jail
Hall Fire Service investigators were inside tracing the cause of the fire
http://accesswdun.com/article/2010/3/227833