An INMATE who killed another prisoner by landing a single punch to the head at a prison in Yorkshire has been jailed for four years.
Keiron Simpson, 26, was serving a prison sentence at HMP Doncaster when he attacked and killed Robert Bryan, 43, on February 27.
Sheffield Crown Court was told Simpson approached Bryan while they were in the communal area of the prison.
He walked up to him from behind and punched him once to the face, knocking him to the ground.
Bryan fell unconscious and was taken to hospital, where he was pronounced dead the same evening.
A post-mortem examination found the cause of death was a blow to the head.
Simpson pleaded guilty to manslaughter.
Simpson, formerly of Smithywood Lane, Dodworth, Barnsley, was serving a 16-week sentence for burglary when he attacked his victim, who had been recalled to prison to serve out the remainder of a manslaughter sentence.
Investigating officer Detective Sergeant Andrew Knowles, of South Yorkshire Police, said the victim was assaulted for no obvious reason.
He added: “This case clearly shows how dangerous and devastating just one punch can be.
“Simpson attacked Bryan for no apparent reason - he may not have intended to kill him but anyone who makes the decision to strike another with force must consider the potential shattering consequences a single punch can have.
“South Yorkshire Police will thoroughly investigate the circumstances of unlawful deaths, whether it occurs inside a house or inside a prison and those who are to blame will be held to account for their actions.”