A murderer jailed in HMP Whitemoor launched an unprovoked attack on a police officer while behind bars.

Christopher Walters, 35, was convicted in 2013 for murdering a man in London, May 2012. 

While serving his sentence in the March prison, he attacked a prison officer on January 16, 2023.

He punched the officer to the face twice, knocking him unconscious. The victim was taken to hospital for treatment and was discharged the same day.

Walters, previously of Neasden in London, initially denied assault causing actual bodily harm but pleaded guilty during a trial at Cambridge Crown Court yesterday (September 24).

At the same hearing he was sentenced to 13 months in prison to be served concurrently to his existing sentence.

DC Emma Purser said: "This was a completely unprovoked attack that left a man needing hospital treatment.

"Although the sentence is concurrent, it will be taken into account when Walters becomes eligible for parole.

"Prison officers do a difficult job in challenging circumstances. Attacks like this are completely unacceptable."