The British National Crime Agency say the “sophisticated” operation is one of the largest cannabis grows they have ever discovered.
A three-floor cannabis farm estimated to be worth more than £1 million has been uncovered at a former nightclub in Coventry.
National Crime Agency (NCA) officers raided the property on Thursday and found 1,000 cannabis plants, making it one of the biggest seizures ever made by the organisation.
Sophisticated planting, growing and irrigation equipment, valued at around £150,000, was also discovered by officers.
Three men have been arrested and charged with production of a class B drug. Two of the suspects were detained with the assistance of the West Midlands Police drone unit as they attempted to flee the building.
Adam Warnock, NCA branch commander, said: “This is a significant drug seizure which will have a huge impact on the organised crime groups involved, depriving them of commodity and profit.
“The size of the cannabis factory was significant and sophisticated, spread across three floors of a large building. It is certainly one of the largest grows ever uncovered by the NCA.