Published: Jan 31, 2014 8:04 AM EST

MIAMI (AP) - Police in Miami-Dade County say they've uncovered a sophisticated marijuana growing operation in what used to be a backyard swimming pool.
    
Detectives said Thursday the pool had been sealed with concrete at the ground level, creating an underground chamber connected to the house by a tunnel. The tunnel led from the pool to a hatch in one of the bedrooms.
    
The grow operation contained 82 live marijuana plants. Two men were charged with marijuana distribution and one with possession.
    
Police found the pool pot operation after stopping a car and noticing a strong odor of marijuana. After finding several bags of pot, police got consent to search the house and discovered the grow lab.

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