Nine people were arrested when police raided a string of cannabis farms today.

In an operation which spanned three counties, detectives seized thousands of plants from six addresses.

Police swooped at houses in Farnworth, Heaton, Ladybridge and Great Lever this morning - as well as a house in Keighley, West Yorkshire, and a further address in Lancashire.

Seven men and a woman were arrested - six of them at one house in Stoneclough - as police continue to unravel a massive drug-growing ring based in the town.

More than 30 farms have been discovered in Bolton in 2007 and police in the town are spearheading Greater Manchester Police's Operation Dragonfly.

More details soon