Cannabis farm with nearly 1,300 plants uncovered in Sheffield city centre
Police made the find last month inside a disused building
Police have seized almost 1,300 cannabis plants, with a street value of around £1.2m, inside an abandoned building in Sheffield.
Officers made the find on Eyre Street on October 24, but had to get past a reinforced door in order to fully search the building.
The 'sophisticated' grow also included a number of hidden rooms which had been created via holes drilled in the walls.
Sergeant Simon Pickering, of South Yorkshire Police, said:
"The cannabis farm we encountered on Eyre Street was highly sophisticated and it was clear a large operation had been going on inside the building.
"We found evidence that people had been living inside and we suspect they had been tending to the plants which had a potential street value of around £1.2million.
"While we didn't make any arrests at the scene, we are exploring a number of forensic opportunities to identify suspects and bring them into custody.
"Large cannabis grows such as this one are often used to fund the activity of organised crime groups who take advantage of vulnerable people and bring violence to our streets.
"Putting a stop to this operation will have made a significant dent in this criminal activity and we're now working hard to progress the investigation.
"Information provided to us by the public helps us to act quickly and I'd urge anyone who knows someone is growing cannabis near to where they live or work to get in touch with us as soon as possible.
"Signs a building is being used to grow cannabis include visitors at strange hours, excessive condensation on windows, a blocked letterbox and blacked out windows."