Schoolboy Daniel Entwistle disappeared from near his home at Copperfield Avenue in Great Yarmouth on Saturday 3rd May 2003, a Bank Holiday weekend.
Detectives are appealing for anyone with any new information about his disappearance to come forward. At the time a large scale search operation began, but Daniel was never found.
The last sighting of Daniel was on CCTV at Blencowes, a local convenience store near to his home at around 5.05pm.
Daniel's red BMX bike was found abandoned near to the river close to Trinity Quay the day after he disappeared.
Anyone with fresh information relating to Daniel's disappearance can contact Norfolk Constabulary's Major Investigation Team on 101