CANNABIS resin with a street value of more than £50,000 has been seized from a house.
The 105 bars of the drug, weighing 28 kilos, were seized alongside a number of other items detectives believe are linked to drugs.
A 35-year-old man has been arrested on suspicion of being concerned in the supply of controlled drugs and bailed pending further inquiries.
Officers are also working alongside HM Revenue and Customs as an amount of duty-free tobacco was also found at the rented property during the search.
Detective Constable Neil Robinson, of Peterlee CID, said: “Our work is about protecting our local neighbourhoods and tackling criminality in our area.
“This has taken drugs off the streets of East Durham.”
The discovery was made on the same day that a series of other raids netted drugs across Sunderland and Durham.
Sunderland officers also unearthed a cannabis farm after storming a unit at Pallion Industrial Estate during early morning raids.
About 200 plants were found growing inside.
Neighbourhood Inspector Cheryl Warcup, who covers the Pallion area, said: “We’re committed to tackling drug supply and disrupting the supply of drugs onto our streets and will continue to take robust action against those involved.
“Anyone with information about drugs and drugs supply in their area should contact police.”
Meanwhile, cannabis plants worth £40,000 were found at a house in Grampian Drive, Peterlee, with a 39-year-old man arrested on suspicion of cultivation of cannabis and bailed pending further inquiries.
The raids took place in Sunderland and County Durham on Thursday.
Any information can be reported to Northumbria or Durham police by phoning 101, or Crimestoppers anonymously on 0800 555 111.