Police responded to a house on Reservoir Avenue, near Victory Avenue, in Bridgeport on Sunday afternoon to investigate a house break in and said they found around 20 marijuana plants.
When officers arrived at the house, around 4:35 p.m., they found a side door had been forced open and went into the house because they suspected the burglar was still there.
Once they were inside the house, police found around 20 marijuana plants in a room upstairs, police said.
They also noticed a basement door had been forced open and found two rooms with extensive ventilation ducts, electrical wiring, heat lamps, potting soil and discarded marijuana plants, police said.
Officers did not find a suspect, but witnesses said a man had been living in the house for around six months.
Police said they obtained a warrant and seized all evidence.