Hundreds of cannabis plants were found in police raids in South Yorkshire in a crackdown on drugs.
Officers found 322 cannabis plants in raids in Eastwood, Rotherham, worth £270,000.
They then found a stash of cropped cannabis worth another £20,000.
A team of five officers from the Rotherham Central Local Policing Teams team has now seized £300,000 worth of drugs, including crack cocaine and heroin, since the start of the calendar year.
Sergeant Dave Baines said: “This is a significant drugs seizure and we must extend our thanks to the local community, which has led our intelligence gathering efforts.
“Without the public’s input we might have missed this opportunity, which highlights how important engagement is in the disruption of criminality.”
Four men, aged 27, 29, 34 and 37, were arrested on suspicion of the production of cannabis and immigration offences following the Eastwood raids.
Two of the men have been bailed pending further enquiries and two of the men are being dealt with by the UK Border Agency.