Aaron Brady has told his trial he found out a Garda had been killed outside Lordship Credit Union in Co. Louth through social media on the night of the shooting.
Mr. Brady, from Crossmaglen, Co. Armagh, denies shooting Detective Garda Adrian Donohoe during an armed robbery in 2013.
Aaron Brady claims he was engaged in illegal fuel laundering at the time Det Donohoe was shot dead.
Under cross-examination today, prosecuting barrister, Brendan Grehan, put it to him that nobody could back up his alibi, because nobody was there with him.
Mr. Brady agreed, but insisted he was there at the time, and that people knew he was there.
He accepted he initially told lies about his whereabouts, but said that was because he didn’t want to reveal he was involved in diesel laundering.
He said he wasn’t happy with how his account was investigated after he told gardaí what he was doing at the time, and he also denied telling a Sergeant the day after the shooting that he wasn’t aware a Garda had been shot the night before.
He said he did know, after seeing it on Facebook and the news, and wouldn’t have said otherwise.