Police have seized more than £1 million of cannabis after a raid on a business premises near Coalville.
Officers found more than 900 plans yesterday when they discovered a major operation to produce the Class B drug in Bardon Hill.
North West Leicestershire Police commander Inspector Rich Jackson said there have been nearly 30 carried raids out by his officers in recent weeks to disrupt the local drugs trade.
He also tweeted to say more police action would follow.
The police have said they were called to the industrial unit in Walker Road after the owner of the building said he was unable to get inside.
At the time officers attended the unit, no-one was present and no arrests have been made.
Sergeant Ryan Ludlam of Leicestershire Police said: “Our inquiries into the discovery of these plants is continuing today, and officers remain in the area while they are recovered.
“We think there are around 900 plants.
"The set up inside the unit was sophisticated. Tackling the production of drugs is one of our key priorities and we would like to speak to anyone who has information regarding this grow.
“We’re particularly keen to speak to anyone who visits or uses the industrial units in Walker Road, and who may have seen someone – or a group of people – acting in a manner that aroused suspicion.”
The police said they had had a busy night dealing with the cannabis and while they have not said exactly where it was they have published pictures of a large number of plants set out under lighting in a large building.
The force has had other successes in recent weeks targeting marijuana production wit a string of raids on large drugs factories in Leicester city centre.
Anyone with information about the Walker Road find is asked to call the police on 101.
