The Co Armagh man accused of the murder of an Irish policeman told a New York barman "multiple times" that he had shot a Garda in a "robbery gone wrong", a court has heard.
Daniel Cahill (28), originally from Dublin, was giving evidence via video-link from a Homeland Security building in the US in the trial of Aaron Brady (29), who denies murdering Detective Garda Adrian Donohoe during a robbery in Co Louth in January 2013.
Yesterday Mr Cahill told the court that he began working at the Coachman's Inn bar in the Bronx in December 2013.
He said he was working one night when Brady was involved in a fight during which he received a gash above his eye.
Mr Cahill told the court that Brady was "repeating that he was going to kill (the man who punched him)" and "that he didn't know the things he was capable of".
Mr Cahill said the accused told him he had "shot a member of Garda Siochana" in Ireland and that it was "stupid to retaliate or mess with him".
The jury was told of a separate incident later that year when Mr Brady was drunk in the Coachman's Inn and appeared "very upset". Mr Cahill said Brady "mentioned how a robbery gone wrong led to him shooting somebody".
Asked if Brady said who he had shot, the witness responded: "A Garda Siochana. He never mentioned the person by name."
Mr Cahill said Brady "mentioned multiple times he had shot a Garda".
On another occasion the following year Mr Cahill said he went to an apartment after work with three men and Mr Brady.
The witness said that "Aaron decided he was the person there with the most experience because he said that he was the only person there who had killed someone".
He said he couldn't recall Mr Brady giving much detail "other than the fact he had shot a guard".
The trial continues.