A PRISON officer was taken hostage by Islamic extremists at an East Yorkshire jail.
The male officer is understood to have been stabbed during the four-hour stand-off at HMP Full Sutton on Sunday, which is being treated as terrorism. He suffered a broken cheekbone.
A female prison officer was also hurt as she tried to stop the inmates, suffering minor injuries. Both have been discharged from hospital.
Police have confirmed it is being investigated by counter-terrorism officers.
An internal email sent to all staff in the prison service said the prison officer was chosen by the three Muslim prisoners because he had links to the Armed Forces.
However, the Ministry of Justice later said neither of the officers involved were in the armed services and initial information had been "misinterpreted".The internal email linked the attack to the murder of Drummer Lee Rigby in Woolwich last week, who was killed by Muslim extremists.
The email sent to staff says: "Three Muslim prisoners took an officer hostage in an office."Their demands indicated they supported radical Islamist extremism.
"The officer taken was an ex-serviceman and, throughout the incident, threats were made to kill him. "All staff are reminded to remain vigilant to the increased risk of potential attacks on prison officers inspired by these and last Wednesday's events."A statement issued by the North East Counter-Terrorism Unit said: "Enquiries are ongoing to establish the circumstances surrounding the incident. "Given the potential nature of incident and the range of skills and expertise within the North East CTU, the unit is leading the investigation at this time." Officers will be investigating whether the attack is linked to the murder of Drummer Lee Rigby, who was killed in Woolwich last week by Muslim extremists.