Tornado teams are responding to an incident involving a “50 prisoners” at HMP Birmingham.
The Prison Service confirmed the incident is confined to one wing and does not pose a threat to the public. Sources within the prison have said two wings have been taken by gangs who have covered their faces with ripped bedsheets. It is understood that inmates are upset about a smoking ban than has come into force.
The prison, operated by G4S, was the scene of 12 hours of disorder in December 2016 , which required riot teams to be deployed.
A G4S spokesman said it was working with the Prison Service “to bring the incident to a safe conclusion”.