A Co Donegal man yesterday identified a garda sitting in the tribunal as the one he alleged put a gun in his mouth, spat in his breakfast and stamped on his feet during an interview.
Damien McDaid (41) had previously described the garda responsible for the alleged incidents during interrogation in Letterkenny Garda station in December 1996 as being a "hefty fella" but did not know his name.
Yesterday, tribunal lawyer Paul McDermott SC asked if he was in a position to tell the tribunal who the man was whom he made the allegations against.
Mr McDaid replied: "I can see the man here." Mr McDermott asked him to point him out. Mr McDaid then described where the man was sitting and pointed to the back of the room where a man in plain clothes sat.
Mr McDermott said he believed that was Det Garda Seán Herraghty.
On Monday, the solicitor for Det Garda Herraghty said his client denied the allegations. He described spitting as a "despicable act" and said he would never have done such a thing. He also said he was never alone with Mr McDaid in the interrogation room.
Mr McDaid was one of 12 people arrested in connection with the death of cattle-dealer Richie Barron, whom gardaí claimed had been murdered. The tribunal has since found that Mr Barron was the victim of a hit-and-run.
Mr McDaid's younger brother, Gavin McDaid (27), said his brother was an electrician in 1996 and he was just 16 or 17 and an apprentice. He broke down as he described how his brother used to ring him, sometimes when drunk, to tell him what happened in the interrogation.
"He used to phone up. He shouldn't have been telling me, I was just a wee boy. It's just hard to watch somebody who you look up to and respect who's supposed to be your big brother," said Gavin McDaid.
He said after the interrogation, which lasted 12 hours, his brother "went kind of to pieces". His brother told him once that the garda had stuck a gun in his mouth and three or four times that gardaí stamped on his feet, he said.