Two men jailed for the murder of Bradford Pc Sharon Beshenivsky have admitted stabbing a fellow prisoner.
Both men admitted to stabbing a fellow prisoner
Muzzaker Imtiaz Shah, 27, of Birmingham and Yusuf Abdillh Jamma, 22, of London, pleaded guilty to stabbing Tony Piggott at Frankland Prison in County Durham.
They were sentenced to four years in prison, concurrent with the minimum 35-year life sentences they are serving for murdering Pc Beshenivsky.
The men shot the officer in a robbery at a Bradford travel agency in 2005.
Piggott, 23, who was jailed for a nightclub shooting in Manchester, was attacked at Frankland Prison in March last year.
The two men at first denied the joint charge of wounding with intent to cause grievous bodily harm.
But before the trial was due to begin at Newcastle Crown Court they pleaded guilty to the lesser charge of unlawful wounding.
Sentencing the pair, Judge Beatrice Bolton said she thought the knifing was not intended to cause grievous bodily harm but was "more likely with the intention of teaching Piggott a lesson and marking him".
"To put it in a nutshell there was a prison fallout, the root of which is difficult to establish, which resulted in you two attacking him with a knife.
"The reality of this situation is that you are both dangerous young men," she added.
Christopher Knox, prosecuting, told the court that the incident happened at around 1900 GMT on 6 March last year, in the prison's F wing.
He said a prison officer saw Shah and Jamma emerge from Shah's cell and move to Piggott's cell.
Prison officers raised the alarm and found Piggott being held down on his bed by Shah, while Jamma was striking him.
Piggott suffered a number of stab wounds to his body and face but was not kept in hospital.
Mr Knox said the weapon was described as "prison-made" and "a small, crude but nevertheless effective stabbing knife".