A man convicted of manslaughter over 30 years ago has absconded from North Sea Camp.
Peter Sullivan, 54, left the open prison near Boston on Wednesday, November 29.
Lincolnshire Police believe he does not currently pose a risk to the public.
Sullivan is white, 5ft 11ins in height, of slim build, with a grey beard and receding hairline.
Anyone with information should call 101, quoting incident number 323 of November 29.