A Donegal publican acknowledged at the Morris tribunal that his initials appeared on changes to notes taken during an interview with two senior officers, after earlier stating that he did not recall any notes being taken during the meeting.
Pat Marrinan, representing retired Det Supt John McGinley and retired Supt John Fitzgerald, put it to Frank McBrearty snr that several changes to the notes taken by the officer were marked with his initials.
"That is my initial, definitely my initial," Mr McBrearty (62) said.
The publican earlier said he did not remember any notes being taken at the meeting, and said he thought the officers might have taped the conversation.
Mr McBrearty said he did not know what Det Insp John McGinley was doing asking him to sign a blank sheet of paper while in Garda custody during the same meeting, "but he was up to no good".
Mr Marrinan said Mr McGinley denied that this incident occurred, and asked Mr McBrearty why he had not mentioned the incident to his solicitor when he spoke to him the next day.
"I'm saying to you there's a whole pile of things happened to me that I forgot to tell my lawyer, because I was in a state," Mr McBrearty said. "I didn't tell him every single thing that they done to me."
Mr McBrearty said the courts too often took the side of the State and the gardaí against citizens, and "seem to believe the guards' version of events in this country because they work for the State".
"People up in the courts, some of them guilty, some of them innocent, are at a very bad disadvantage because of that. I think our system would be inclined to side with the State in a lot of things.
"They would say, 'Well, if the guard is in the witness box and he takes the Bible in his hand, he'll not tell lies.' But see, I don't believe that anymore. I believe they perjure themselves, week after week, day after day. Not the whole of the guards now, but some of them."
Mr McBrearty said he never spoke to his son about an alleged statement confessing to the murder of Mr Barron, which detectives told him about, "because I never believed it in the first place".
He said he had "hardly a penny left" after his arrest.