The Prison Service said all its prisons run a "safe and secure regime" after disturbances broke out at two jails yesterday.
A spokeswoman said:
All our prisons run a safe and secure regime and are staffed appropriately.
We are currently introducing reforms to the prison system that will provide better value for taxpayers while protecting the public and improving the chances of prisoners being rehabilitated.
More top news
Some warm sunshine today, but also scattered heavy showers in the South-west.
A 14-year-old girl who died after falling ill in a PE class has been named locally as Kiera Beagle.
A man has broken his arm diving out of a coffee shop window after mistaking a disturbance on the ground floor for a terrorist attack.