Mr Ball disappeared first and several days later Mr O’Brien, who had been looking for him and it is believed had suspicions about what had happened to him, also went missing. Mr O’Brien, a former computer science student, had been a volunteer at a local hostel for the homeless.
A third man, Patch O’Driscoll, then disappeared. When Patch vanished in December 1994, Gardai launched one of the biggest manhunts ever witnessed in Munster. The house on Wellington Terrace, with which all three missing men had connections, was the main focus of the investigation.
Supt Mick Comyns of Mayfield Garda station said they would be asking the public for any information they may have on the events of 24 years ago.