Police are appealing for help in tracing a prisoner who absconded while on day release.David Matthew Ambler, 31, was being escorted to an address in Brandon when he ran off along St Margaret's Drive at 11.

Police are appealing for help in tracing a prisoner who absconded while on day release.

David Matthew Ambler, 31, was being escorted to an address in Brandon when he ran off along St Margaret's Drive at 11.45am today.

Ambler is serving a three year sentence for robbery at a secure unit in London.

He is described as white, 5ft 7ins tall, weighing 100kg, with brown eyes and short cropped greying hair.

He has a tattoo on the back of his left calf.

When last seen, he was wearing a black top, black jeans and black trainers.

Police have been searching the area where Ambler ran off and have been making house to house inquiries.

Anyone who sees Ambler is advised not to approach him but contact police immediately on 01473-613500.