POLICE say they are doing "everything possible" to trace a growing number of prisoners who have absconded from an open prison near Ashbourne.
There are 29 prisoners on the run from HMP Sudbury, a category D open prison where inmates are allowed to leave the site during the day to complete community orders and unpaid work assignments.
On Monday, Asaf Mahmood became the latest inmate to fail to return to the prison.
It has received criticism over the number of inmates absconding, but Assistant Chief Constable Martyn Bates says police are doing all they can to reduce the number of those failing to return.
He said: "When a prisoner fails to return to the prison or is found to have absconded, prison staff alert the police and we take action to try to find the prisoner."
Derbyshire police have a small team of officers who are dedicated to tracking down absconders from the prison, liaising with officers from other forces which may have a greater knowledge of the criminals and the crimes they were sentenced for.