A man who was convicted for a violent robbery has escaped from HMP Dovegate in Staffordshire.
Haroon Ahmed aged 26 from the Derby area escaped at 4.15 on Wednesday.
Due to the violent nature of his conviction police advise members of the public not to approach him but to instead ring 999.
He is described as Asian, 6ft tall with a thin build and short black hair in a crew cut.
He was wearing jeans and a grey t-shirt but police say it is likely he has changed his clothing.