Police have released an image of escaped prisoner Keiran Staff, who fled HMP Sudbury in Ashbourne, Derbyshire, on Saturday.
Anyone with any information is advised not to approach him but should contact police or Crimestoppers anonymously on 0800 555 111.
More top news
A father has been found guilty of murdering his three-month-old son by hurling him "vigorously" against a hard surface in a fit of temper.
The self-styled revolutionary has spent the last 23 years in a high security prison for a string of murders and attacks.
Cancer surgeon accused of conducting series of 'completely unnecessary' operations denies giving cancer-phobic GP an unneeded mastectomy.