Men on trial over HMP Grampian 'riot' in Peterhead
Six men have gone on trial accused of being involved in a riot at HMP Grampian in Peterhead.
The men deny conducting themselves in a "violent, riotous and tumultuous" manner and forming a mob of "evilly disposed persons".
The incident at the jail is alleged to have happened in May 2014. "Extensive" damage is alleged to have been caused.
The beginning of the trial at Aberdeen Sheriff Court heard that the case could go on for several weeks.
On trial are Robert Gill, 26, from Newburgh in Aberdeenshire, Stephen Sim, 31, from Stonehaven, Michael Stewart, 31, from Forfar, 30-year-old Dominic Jordan, from Wirral in Merseyside, Sandy Mundie, 30, from Aberdeen, and 33-year-old George Thomson, also from Aberdeen.
They are said to have acted aggressively with their faces masked while brandishing sticks and metal poles.
The men are said to have culpable and recklessly thrown the objects from a height with no consideration of the consequences of where the objects would land or whether they would strike anyone.
HMP Grampian opened at the beginning of March 2014 as a replacement for HMP Peterhead and HMP Aberdeen.