Here are details of some unsolved crimes in North Wales and this crime is featured:
The North Wales murder cases that have never been solved:
The remains of the man found in
Clocaenog Forest are likely to have been left there sometime between 2004 and 2010.
Detectives found fabric from a green Pringle jumper sold between 2000 and 2004 and a label for Marks & Spencer underwear from 1999 to 2000 near the site.
The remains were found in October 2015 during a
Wales GB Rally Stage when a spectator discovered part of a skull.
North Wales Police launched a large scale forensic search around the forest and were able to recover virtually an entire male skeleton.
Tests on the skeleton and skull have produced a DNA profile.
A post-mortem examination discovered he had been murdered by blunt trauma to the skull, and examinations of his teeth and specialist radio carbon dating found the man was born before 1950.
Forensic odontologists found he had had specialist dental work at some point in his life and detectives had hoped the highly distinctive nature of the work could have helped identify him.
Believed to be between 5ft 8in and 5ft 11in tall the man had also suffered from arthritis and had an issue with his spine which would have caused “limited mobility”.
But despite repeated appeals, the man has never been identified.