Gardaí say they have arrested a man in connection with a triple murder investigation in Co Kildare 30 years ago.
20-year-old Barbara Doyle and her two young nieces Mary Ellen and Kerrie Byrne died in a fire in Kilcock on September 20th 1987.
Last week gardaí upgraded their investigation on foot of new evidence.
A man in his 50s was arrested this afternoon in North County Dublin.
He is currently being questioned at Leixlip Garda Station under Section 4 of the Criminal Justice Act.