Vivid pictures taken with thermal imaging heat-seeking cameras by a Government funded organisation dedicated to promoting increased use of house insulation, revealed the cannabis producing operation in south Leeds.

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The technicolour photographs clearly show just how much heat was being wasted at the end terrace property in the area covered by the Holbeck Neighbourhood Policing Team (NPT).

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The pictures illustrate the discrepancy between the heat used in the cannabis farm set-up at the house and the much lower normal levels being produced at neighbouring properties.

The photographs indicated that the heat was coming from the cellar and upstairs bedroom areas and were passed to police.

Officers obtained a search warrant under the Misuse of Drugs Act and regular police and police community support officers (PCSOs) raided the address.

Inside they found dozens of cannabis plants under cultivation and a stock of already harvested mature plants.

A 24-year-old man was arrested on suspicion of cultivatiing cannabis and possession of an illegal Class B drug with intent to supply.

He has been bailed pending further police enquiries.

Insp Damien Miller of Holbeck NPT said: "The photos gave the organisation cause for concern because of the amount of heating coming from the property, and they were right to contact the NPT to investigate further.

"The vast majority of information we receive about cannabis farms comes from concerned members of the public, and I would like to encourage anyone with suspicions about people cultivating cannabis to contact us in confidence."

Any residents who suspect someone of being involved in the cultivation of cannabis or drug dealing are asked to get in contact with their local Neighbourhood Policing Team, or to contact Crimestoppers, anonymously and in confidence, on 0800 555111.