Security prisoner Stephen Jamieson ties bed sheets together, climbs jail wall to escape from Goulburn prison
Stephen Jamieson, 28, had been in segregation after being identified as a suspect over the discovery of a man-made hole in the floor which was found in the prison earlier this month.
Jamieson was last seen at about 12:50pm today and was wearing prison greens at that time.
He had been in custody since 2013 and is serving 12 years in prison for armed robbery.
NSW Corrective Services Commissioner Peter Severin said the prisoner escaped from a small secure exercise yard that is attached to each segregation cell.
The cavity, with a 40 centimetre by 18 centimetre wide entrance, was found under a cabinet during a search of the furniture workshop at the jail in the southern tablelands earlier this month.
The Department of Corrective Services said the cavity was more than 100 metres away from the outside wall of the prison.
An investigation was launched into whether inmates had been trying to dig a tunnel after the hole was found.
The Mayor of Goulburn said at the time there was no risk to public safety and the maximum security facility at the prison was the "strongest and most secure prison facility in NSW if not Australia".
Commissioner Severin said he could assure the community that the correctional system was safe.