The Inmate was attacked during a workshop as prisoners began their Daily Routines after breakfast.
A prisoner has been battered to death at one of the UK's maximum security jails.
The victim was attacked in one of Long Lartin prison's workshops at about 9am as inmates began their daily routines after breakfast.He is believed to be convicted child killer Sidonio Teixeira, who was jailed for life in 2007 for killing his three-year-old daughter and trying to kill his son, aged nine.
He suffered severe head injuries during the attack at the jail near Evesham, Worcestershire. A prison source said he was attacked with a rock taken from a fish tank and hidden inside a sock.
It is thought the victim was pronounced dead as prison staff awaited the arrival of paramedics.
Another inmate, a man in his 60s, has been arrested on suspicion of murder and is in police custody.
He is believed to be Victor Castigador, who is originally from the Philippines.
Detective Inspector Paul Hardman, who is leading the investigation, said: "A thorough and robust investigation has been launched.
"These enquiries are in the early stages so we are unable to provide more information at this time."
Long Lartin has 600 prisoners, many of them category A inmates who are serving sentences of at least four years.
It also houses prisoners on remand awaiting trial.
A prisoner was arrested by West Mercia police and was being questioned on suspicion of murder.
In March this year a Long Lartin prisoner was jailed for life for murdering a fellow inmate and in 2013 two more were jailed for killing another prisoner.
Sky News.
