A massive six-alarm fire tore through an abandoned building on Pratt Street in Meriden and officials continue to investigate to determine the cause.
Firefighters found heavy smoke and fire coming from the second and third floors, according to city officials.
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At one point, the roof of the building collapsed as firefighters battled the blaze from outside.
The fire spread to a plating factory behind the abandoned building.
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Firefighters rescued a man from an area of the plating factory. He was found in an interior hallway and he was disoriented, according to Fire Chief Ken Morgan.
The victim remained in the hospital Saturday, but his injuries were not life-threatening, according to Meriden Mayor Kevin Scarpati.
The plating factory is a total loss, Morgan said.
During a news conference Saturday, the chief said one of his veteran firefighters called it the biggest fire he had seen in his 25 years with the fire department in Meriden.
The Department of Energy and Environmental Protection was called in due to concerns about hazardous materials inside the plating factory. The city is working with the Department of Energy and Environmental Protection and the EPA to determine if an environmental cleanup will be needed.
No firefighters were injured, Morgan said.
Investigators don't yet know where or how the fire started.
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Several fire agencies assisted Meriden, including Hartford, Southington, Cromwell, North Haven, Wallingford, New Britain, Berlin, Hamden, and more.