Three fire crews have been called to a fire which has reportedly broken out at one of the county's prisons.

Norfolk Fire and Rescue were called at 5.02pm to Griston, near Thetford, where it is believed prisoners ignited the blaze at Wayland Prison.

Three crews were called to the fire, but a Norfolk Fire spokesman said they were there 'more as a precaution' and the fire was extinguished before their arrival.