Ni Prison Officer Killing:two Released, No Charges

NI prison officer killing:two released, no charges

Murder of Northern Ireland prison officer denounced

Three arrests over murder of NI prison officer

Georgia man convicted of killing 2 corrections officers sentenced to death

Man accused of killing 3 Kentucky police officers dies in jail

Republican held in Northern Ireland prison guard

Cook County Guards Attacked By Inmates

Inmates Attack Rikers Island Correction Officers

N. Ireland Police: Officer Shot Dead in Ambush

Associated Press

N. IRELAND: SECURITY STEPPED UP FOLLOWING MAZE PRISON MURDERS

A Mississippi inmate head butted an officer on his way to court

ABC Action News

Northern Ireland Police Death: Widow Tells Of Her Loss

Prison Officers Killed In Shootout

Citizen TV Kenya

Former Newport News police officer sentenced to prison

David Black murder: 46 year old man arrested

Manhunt under way in France after two prison officers killed in prisoner escape | BBC News

Georgia inmates kill 2 officers during escape

CNN

Two senior prison officers murdered in Transnmara

Citizen TV Kenya

Carver County Attorney announces no charges in Prince's death

TN Man Escapes From GA Prison; Accused Of Killing Correctional Officers