This is the moment a shadowy figure hurls a package full of drugs over a wall into high-security Strangeways prison in Manchester.
Police have released a series of CCTV images as part of a public appeal for information.
Greater Manchester Police revealed in a statement 'several packages' intercepted by prison staff inside HMP Manchester off Bury New Road were found to contain drugs.
An image of a white Ford Connect van - which police said was found to be on false plates which cannot be identified - has also been released.
Detectives said prison contraband was often sold for up to five times its worth and can promote 'gang culture' on the inside. Anyone with information is now being asked to come forward.
The person appears to be dressed in black wearing a black hat and trainers. No date for the incident has been given.
In a statement, GMP said: "Police are appealing for information after several packages were intercepted by prison staff and were found to contain drugs.
"Detectives are looking to identify the white Ford Connect van and the person pictured in the attached CCTV images in connection with the incidents. The van has been found to be on false plates which cannot be identified.
Detective Constable Samantha Gaunt, of GMP's challenger prison team, said: "Contraband such as this is often up to five times more expensive when sold inside prisons and can make the prison an unsafe environment.
"It can promote gang culture and can lead to further crimes being committed by inmates and pose a serious risk to the safety of prison staff and prisoners, whilst lining the pockets of Organised Crime Groups."
Anyone with information can call police on 101 quoting crime number 06A2/0002816/22 or Crimestoppers on 0800 555 111.
