Knoxville (WVLT) The flames were only part of the dangerous situation this week's warehouse fire posed.
Demolition crews are working now to bring down the unstable remains.
WVLT Volunteer TV's Kim Bedford has more on the efforts.
The wrecking ball hit around 3:15, but there is still quite a lot of work to be done.
In a matter of minutes part of the seven story McClung Warehouse Company fell to a pile of rubble.
Heavy winds blew dust high into the air, but that didn't stop dozens of bystanders from watching the peace of history come to the ground.
Demolition crews had to carefully knock the walls away from the interior remains of the building to preserve the scene for arson investigators.
Knoxville Fire and Explosion Investigation says, "the first goal is to find out where it started and we look at why it started but we will just have to look and see what's there and go from there."
Investigators can not get inside until it's deemed safe.
A city task force of inspectors from Knox County and the US Bureau of Alcohol Tobacco Fire Arms and Explosives could start sifting through the layers of brick and ashes as soon as Saturday.
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