A man has been arrested after a major cannabis factory was discovered in Wisbech.
Some 480 young plants were concealed in a modest semi in the town's Oakroyd Crescent.
Police who raided the address said they could have produced up to £250,000 worth of the drug.
They described the set-up as highly professional, with CCTV cameras rugged up so the plants could be monitored remotely.
Plants of different ages were found growing in four rooms using a sophisticated hydroponic set-up containing fans and growing containers.
Several rooms also contained black bin bags full of freshly-harvested cannabis, ready for sale.
No-one was detailed after officers swooped on the property on Friday.
But this morning a 49-year-old man from Wisbech was arrested on suspicion of cultivating cannabis.
He remains in custody at the Police Investigation Centre in King's Lynn.
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