Prison riot squad officers have been sent into HMP The Mount for second time in 24 hours as inmates seize the prison accommodation
The Specialist Tornado Team’ was dispatched after staff lost control of part of Nash wing with the prison this morning.
The Ministry of Justice confirmed the incident, but said the prison remained secure and there was no risk to the public.
It is understood prisoners armed with weapons have seized control of part of Nash wing, which houses 250 inmates who only three months left to serve of their sentences.
The Mount is a Category C prison in Bovingdon which holds more than 1,000 inmates.
It is described as “a hybrid training and resettlement prison, catering for a number of prisoners in the last six months of their sentence who are residents of Hertfordshire and surrounding areas”.
An inspection in 2015 found the prison was performing well, with inspectors noting it was “reasonably safe and felt calm and well ordered”, but chief inspector of prisons Nick Hardwick added that there was “room for improvement”.