YONKERS, N.Y. (CBSNewYork/AP) — Firefighters discovered dozens of marijuana plants while battling a blaze at a Yonkers house.

Firefighters responding to the fire at 2:40 a.m. Sunday found four bedrooms filled with the plants.

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Yonkers Assistant Fire Chief George Kielb told the Journal News “it was basically a pot-growing house.”

Kielb said the house looked like a normal home from the outside but all the windows were covered with plywood.

No one was at home when firefighters responded to the fire, which burned through part of the roof.

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Kielb said the marijuana was found under heating lamps in a hydroponic system connected to electrical lines that had been diverted around the home’s meter box.

The investigation into the fire and marijuana is continuing.

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