A member of the feared Lyons gang sparked a near riot at a maximum security jail that left three prison officers in hospital with
suspected broken bones.
Convicted murderer Mark Moncrieff, 35, and acid attacker James Smith, 27, encouraged fellow inmates to attack staff during a tense hour-long stand-off at HMP Shotts.
Moncrieff, who laughed in the dock after being convicted of the murder of a dad protecting his daughter, is believed to have been under the influence of drink and drugs during the rampage.