HMP Garth prisoner climbs on to roof of Lancashire jail
A prisoner has climbed on to the roof of a Lancashire prison.
The man can be seen walking across the roof of the category B HMP Prison Garth in Leyland.
The Ministry of Justice said "trained staff are working to resolve the situation".
Lancashire Fire and Rescue Service said it received a call just after 18:00 BST and is on standby, along with the ambulance service.
The training prison holds a maximum of 847 men and houses a specialist unit for sex offenders.