Two members of the gang which murdered Pc Sharon Beshenivsky have been charged with stabbing a fellow prison inmate.
Both men must serve a minimum of 35 years in prison
Yusuf Abdillh Jamma, 20 and Muzzaker Imtiaz Shah, 25, were sentenced to life in prison following the shooting of the officer in Bradford in 2005.
Both are accused of stabbing a man, 22, who is also serving life for murder, at Durham's Frankland Prison in March.
They will appear before Peterlee magistrates on 30 August, charged with wounding with intent.
The prisoner was reported to have been stabbed in the stomach on 6 March.
Pc Beshenivsky was shot on 18 November 2005 at a travel agency in Bradford.
In December last year, Shah and Jamma were both told they must serve a minimum of 35 years in prison for her murder before being considered for release.
Frankland Prison, which houses some of the UK's most dangerous terrorist inmates, has seen several high-profile attacks in recent months.
In July, the jail cell of Hussain Osman, one of the 21/7 bomb plotters, was set alight.
It followed an attack on another al-Qaeda inmate, Dhiren Barot, who subsequently spent five days in Newcastle's Royal Victoria Infirmary after being scalded with boiling water.
And earlier this month, three youngsters found a bag containing a sawn-off shotgun and balaclavas hidden in undergrowth near the jail.