Gardaí discovered Mark O’Connor (54), Louise O’Connor (56) and their son Evan O’Connor, (27) deceased in their home in Tallanstown, Co Louth - and shockwaves reverberated nationwide. It would later emerge that the O’Connor family are a very well-known and respected family - "good neighbours and an integral part of their local community". Their photos would soon become familiar to those who never knew them, smiling faces, happy bright times before the darkness of grief descended. Now, even while that grief and shock is still raw, a major garda investigation is underway. See our gallery here for photos from the scene and investigation, and for updates on the fallout from this tragedy, see our live blog.