A massive cannabis farm has been found at the former Cheshire county mansion, Daresbury Hall.
Six hundred plants, with an estimated street value for almost £750,000, were discovered in an annex at the estate in Runcorn after Cheshire Police were alerted through 'local intelligence'.
The force said inquiries are continuing as asked anyone with information to contact them on 101.
"This was a significant find and fortunately we have been able to put a stop to it."
Police in the region have launched a campaign to tackle the increasing menace of cannabis farms.
The initiative is intended to drum home the dangers of growing the illegal drug.
And firefighters in Merseyside came up with an explosive idea to get the message across.
Ann O'Connor has the details:-
A cannabis farm seized at a house on Merseyside has been set alight by firefighters.
It's to highlight the risk of growing cannabis in secret.
The emergency services say it overloads electricity circuits and by passes other safety measures.
Police across the North West are trying to crackdown on cannabis farms. They're handing out scratch and sniff cards so the public can identify the signs and the smell if cannabis is being cultivated nearby. Police are keen trace farms, as they know they're used to fund other types of crime.
Police across the North West are launching a campaign to crack down on cannabis farms.
They're giving out scratch and sniff cards to the public to educate and inform them about the signs that a cannabis farm may be nearby.
It's estimated that cannabis with a street value of 80 thousand pounds can be produced in one terraced house in just three months.
Police and Fire crews on Merseyside are putting on a demonstration of the fire risk that cannabis farms pose to the public.
Cannabis farms worth £6.5 million have been uncovered by Merseyside Police during a month long crackdown on organised crime.
Officers from across Liverpool, Wirral, St Helens, Sefton and Knowsley seized 6,500 plants from 84 cannabis farms. More than 160 people have been arrested in connection with growing cannabis and cash totalling £111,000 seized from them.
Superintendent Dave Charnock said the results showed what could be achieved when the public shared information with the police about drugs in their communities.
One of the largest was an 826 plants cannabis farm at a property off Leyfield Road in West Derby last Thursday.
The range in size and scale of some of these farms has been vast and it is clear that they have been set up by people who are highly organised and know what they are doing. "Many of the larger set-ups have been very sophisticated, with expensive lighting and irrigation systems to replicate the hot, humid conditions these plants need to grow. "Officers and support staff have worked tirelessly to achieve these excellent results often in difficult conditions and it has been reassuring to have so much support from the public who have given us the information we need.
"I am sure these results will show the people of Merseyide just what we can achieve when we work together to stop drug dealing and drug supply blighting our communities."
Police have arrested six men after dawn raids at 10 addresses across Merseyside.
The men, aged between 20 and 51, are being held on suspicion of conspiracy to produce cannabis.
During the 10 month investigation officers have uncovered four cannabis farms at addresses in Kirkdale, Fazakerley, Anfield and Tuebrook worth around £250,000.
Searches of the addresses are still being carried out by officers, but officers have already recovered a large amount of cash.
We are committed to stamping out the illegal drug-dealing activities that cause misery to the lives of so many. Work undertaken by the Force shows that many of the firearms incidents we see on Merseyside are linked to the cultivation of cannabis and those involved in cannabis cultivation do not care about the consequences that their actions have on communities and we will not tolerate this kind of behaviour."
Those arrested have been taken to police stations across Merseyside where they will be interviewed by detectives.
Police have arrested 12 people and seized more than 260 cannabis plants during the second day of a week-long crack down on drugs gangs.
Officers executed drugs raids in Birkenhead, Rock Ferry, Southport, Kirkby, Halewood, Orrell Park, Aigbuth and Toxteth yesterday.
Crimestoppers are encouraging anyone who susepcts they live near or know where a cannis farm has been set up to pass on that information anonymously and in confidence so that the police can take action.
On Monday police arrested 14 people and seized more than 250 cannabis plants during the first day of the operation. Ammunition, cocaine and heroin were also seized as officers cracked down on organised criminal gangs.
Former Shameless and EastEnders star Jody Latham, from Lancashire, has appeared in court charged with producing cannabis.
Latham, 29, is accused of growing 24 plants, with a value of about £14,000, at an address in Bacup in May last year.
He found fame through the role of "Lip" Gallagher in Channel 4 drama Shameless.
He attended Burnley Magistrates' Court along with co-defendant Sarah Melia, 31, who faces the same charge.
No pleas were indicated for either defendant as the case was adjourned until October 10 when the matter is due to be committed to Burnley Crown Court.Latham, of Market Street, Bacup, and Melia, of Cotman Close, Bacup, were granted unconditional bail