A double murderer put five prison officers in hospital when he “kicked off” at having his bread ration reduced.
Mark Robinson made threats that one of the officers would “be leaving in a body bag” before turning violent at Wakefield’s maximum security prison.
Leeds Crown Court heard Robinson, 52, is serving a whole life tariff for murders committed in 1979 and 1990.
The 20 stone, 6ft 3ins killer is kept in a cell in an area of the West Yorkshire jail which houses some of the most dangerous criminals in the country.
Christopher Jackson, prosecuting, said Robinson and other inmates had become upset at changes to their bread ration. They had been allowed two loaves per week but a decision had been made to give them a few slices each day.
The attack happened on December 30 last year after Robinson had been released from his cell to collect his food. He told the officer in charge: “I’m not happy and I might kick off.”
Mr Jackson said Robinson then suddenly threw his food into the air and kicked the officer in the groin. Mr Jackson said the officer thought he was going to die because he knew Robinson had killed twice before.
Another officer came to help but Robinson punched him in the face and broke his nose. The officer immediately went into shock and had to undergo painful surgery because his injuries were so severe.
The court heard five officers in were injured before Robinson was subdued.
They all needed hospital treatment and the incident put a strain on manpower at the prison.
Robinson pleaded guilty to affray and assault occasioning actual bodily harm. He refused to leave his cell to appear before the court via video link from the prison.
The court heard he has a conviction for assaulting someone in prison in Worcester in 2005.
The Recorder of Leeds, judge Peter Collier, QC, marked the offences with a three-year prison sentence.
He said: “He is clearly a very dangerous man.”