A 32-year-old prisoner has denied three charges of attempted murder after alleged assaults inside three UK prisons including at HMP Lincoln.
Aklakur Rahman is charged with attempting to murder prison officer Derek Walker and fellow inmate David Sutton following an incident at HMP Wayland, near Thetford, on July 21, 2017.
Both Sutton, from Canvey Island, and the prison officer were taken to the Norfolk and Norwich University Hospital following the incident.
Sutton, 30, required scores of stitches to a neck wound and prison officer Walker later received a bravery award from the Royal Humane Society for his actions during the incident.
Rahman, who is originally from Ipswich, is also accused of attempting to murder another prison officer at Lincoln Prison.
That assault is alleged to have occurred at HMP Lincoln just two days after the incident at HMP Wayland on July 23, 2017.
Rahman is also charged with attempting to wound another prison officer at the high security HMP Wakefield jail on August 16, 2017.
Rahman denied three charges of attempted murder and three alternative charges of wounding with intent to cause grievous bodily harm when he appeared in the dock at Lincoln Crown Court.
He also denied a charge of attempted wounding with intent to cause grievous bodily harm relating to the incident at HMP Wakefield.
Judge John Pini QC adjourned the case for trial and remanded Rahman in to custody.
He will next appear at Lincoln Crown Court on July 12.