Two men from Liverpool were arrested after the bomb squad was deployed to a house in Warrington.
Cheshire Police's Explosive Ordnance Disposal (EOD) team was sent to a house in Savannah Place in the Chapelford area of the town at around 12.45pm yesterday (Monday.)
Specialist EOD officers recovered a "substance" from the house which is now being assessed.
A number of cannabis plants were also seized in the house.
Two men from Liverpool, aged 26 and 31, were arrested on suspicion of producing a controlled Class B Drug (cannabis). Both have been released under investigation pending further enquiries.
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A police spokesman said to the ECHO : "At 12.45pm on 29 March officers from Warrington LPU carried out a drugs warrant at an address in Savannah Place, Warrington.
"A number of cannabis plants were seized along with a substance which was assessed by EOD and seized as part of the investigation by police.
"Two men from Liverpool aged 26 and 31 were arrested on suspicion of producing a controlled Class B Drug (cannabis).
"Both have been released under investigation pending further enquiries.
"We want to reassure residents that at no point were residents or members of the public at risk."
