House fire upgraded to murder investigation 30 years later

Her daughters, Mary Ellen, 8, and Kerrie Ann, 3, along with their aunt, Barbara Doyle, 20, died in the Byrne family home in Kilcock, Co Kildare, on September 20, 1987.
While her sister babysat, Ms Byrne and husband Aidan, who has since died, were at a 21st birthday party in the locality.