Officers from Sheffield's local police team found over £800,000 worth of cannabis during a during drugs search yesterday.
Police seized the drugs from a property in the Bannerdale area of Sheffield which had a "factory set up".
They found 28.5kg of dried cannabis ready for the streets, with an estimated street value of £200,000.
A total of 7 rooms were found to contain cannabis growing from seedlings to plants 4-5ft in height.
Officers found dozens of transformers, special fans designed to be silent and specialist 600w lights - which are said to have cost thousands of pounds to put together.
In total, it is estimated that the haul was in excess of £800,000, including the dried cannabis found.
On Facebook, Sheffield South West LPT said: "An excellent days work and great to get this amount of cannabis off the streets."
The property was vacant during the search of the property, and no arrests were made.
Sheffield South West LPT said: "There was a plethora of evidence left behind, so scenes of crime officers had a field day collecting evidence which will be used to arrest and process those responsible".