The Prison Minister Jeremy Wright is visiting Wellingborough Prison in Northamptonshire.
A protest has been held in Wellingborough against plans to close the local prison.
The Prison Service says an investigation is underway after a woman from Northamptonshire found confidential records by her garden gate.
Peterborough Prison has been criticised by the Howard League for Penal Reform for the number of self-harm incidents which have been recorded there.
The charity says 24 self-harm incidents were recorded every week at Peterborough last year.
Peterborough Prison holds both men and women.
Women represent one in 20 people in prison but they make up half of all self-harm incidents.
Five people have been sentenced to a total of six years following a prison mutiny at Warren Hill at Hollesley in Sufolk.
Police were alerted to the disturbance at the Young Offenders Institution on 2nd November 2010.
The mutiny happened when up to 50 prisoners refused to return to their cells after a dispute during evening lock up.
The Ministry of Justice is to close 7 of the country's prisons, including some in our region. 2,600 places will be lost from "old and uneconomic" prisons, with the hope it will save £63m in running costs. The Ministry of Justice says it also plans to build a new super prison with 2,000 places.
HMP Bulwood Hall in South Essex is to close, with the loss of 241 places
Also in Essex, HMP Chelmsford will lose 132 places
Meanwhile, HMP Peterborough looks set to get extra prison blocks
A protest has been held in Wellingborough today against plans to close the local prison. It's been earmarked for closure as part of a Government review of the prison system. Campaigners say it will mean a loss of around 600 jobs in the town.
MPs will discuss the closure of Wellingborough Prison in an emergency debate in Parliament after the summer recess.