Two prisoners are being held in police custody after Subhan Anwar, from West Yorkshire, who was jailed for torturing and murdering his partner's two-year-old daughter, was found dead in his cell in Worcestershire.
Anwar, who was jailed for a minimum of 23 years in 2009 for the murder of Sanam Navsarka, is understood to have been held hostage in a cell at HMP Long Lartin before he was killed.
His partner Zahbeena Navsarka was cleared of her daughter's murder but found guilty of manslaughter and jailed for nine years.
A Prison Service spokeswoman said: "An incident at HMP Long Lartin on Thursday, February 14 resulted in the death of prisoner Subhan Anwar.
"Two prisoners are now in police custody and the matter is being investigated by police."
Anwar and Navsarka, from Huddersfield, were condemned for their cruel and selfish treatment of Sanam. The violence inflicted on the youngster happened near the end of her life.
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