A prisoner was caught on CCTV leaving his cell with a smirk on his face before battering a fellow inmate to death at a prison.
Ashirie Smith, 19, murdered Mahir Abdulrahman, 31, by brutally stamping on his head and neck inside his cell at HMP Fosse Way in Leicestershire on August 20 last year.
The victim was found unresponsive by a female prison officer inside his cell with horrific injuries and suffering a cardiac arrest at at 7:45am.
He died at the scene around an hour later, with a post mortem later revealing he died from a sub arachnoid basal haemorrhage - bleeding to an area of the brain.
A court heard Abdulrahman was subjected to taunts by Smith and another inmate, Thierry Robinson, 21, which ended up with him throwing a hot kettle at them.
