Man released over IRA murders of nun and officers in Armagh
A man arrested over a 1990 IRA bomb attack in which three police officers and a Catholic nun were killed has been released.
The 55-year-old was arrested in Armagh on Thursday morning.
He was questioned about a number of offences including the murder of the officers and nun.
They were killed when a landmine hidden in a culvert on the Killylea Road in Armagh was detonated on 24 July 1990.
The victims were Sr Catherine Dunne, Constable William Hanson, Reserve Constable Joshua Willis and Reserve Constable David Sterrit.