A MURDERER who was serving two life sentences was “killed by another prisoner” inside a high-security jail.
John Mansfield was attacked inside HMP Whitemoor, , on Sunday and a 44-year-old has since been arrested on suspicion of murder.
It is thought the attack occurred in the prison's close supervision centre where inmates are meant to be monitored.
Despite the best efforts of prison staff Mansfield died following the incident.
A Ministry of Justice spokesman said: “are investigating the death of prisoner John Mansfield at on Sunday, April 13. It would be inappropriate to comment further at this time.”;
Mansfield had 75 prior convictions and was serving a life sentence following the murder of his elderly neighbour in 2007.
The brutal attack saw Ann Alfanso, who was 63-years-old at the time, stabbed almost 100 times at her home in Manchester.
He received a second life sentence in 2014 after stabbing another prisoner with a broken plate.
It comes just days after three prison guards had hot cooking oil thrown over them, leaving a woman seriously injured.
The brother of the Arena bomber allegedly knifed three prison guards.
Warders suffered from burns, scalds and stab wounds from the attack allegedly carried out by 28-year-old Hashem Abedi, sources said.
