The man in his 50s is said to have self-inflicted the injuries at HMP Nottingham just days before he was due to be released.

The incident occurred as inmates were protesting about the sweltering heat inside their cells and general poor conditions of the prison.

"The heat is so high. Prisoners can't deal with it. They need to let some air in the room. It is only going to get worse."

The incident took place as temperatures hit around 25C (77F) in Nottinghamshire.

77F is far from hot.