Police are appealing for information after another convict went missing from HMP Sudbury.
Aiden Walls walked out of the prison at around 7.40am on Thursday 30 November.
The 35-year-old has links to Derby and Birmingham.
Members of the public are asked not to approach Walls and instead contact Derbyshire police with reference 157 of 30 November
You can also anonymously contact the independent charity CrimeStoppers, on 0800 555 111, or by visiting the CrimeStoppers website.