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HOUSTON Flames are dying down Monday morning after massive fire broke out at a warehouse overnight in northwest Houston.

Firefighters worked through the night to fight the raging fire at a company called Waste Management on Clay near Campbell Street, which started at 11:30 p.m. Sunday.

Firefighters said Monday morning that they were having a tough time, because of the way the stacks of material were positioned.

At least 100 firefighters helped battle the blaze. The cause of the fire is still under investigation.

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