CANNABIS plants worth £10,000 were found when police raided a house in Sheffield after reports of a smell in the area.
Suspicions about the property in Loxley View Road, Crookes, had also been raised by gas workers who were unable to get into the property to read the meter.
Officers forced their way into the property on Wednesday and found the upper floor had been converted into a drugs den.
One arrest has been made.
n Anyone with suspicions about cannabis farms in their communities is asked to call police on 101.