Freddie Thompson has been found guilty of the murder of David Douglas on 1 July 2016 in Dublin and sentenced to life in prison.
The 37-year-old, with an address at Loreto Road, Maryland in Dublin, had pleaded not guilty to the murder on Bridgefoot Street in the south inner city.
The trial at the three-judge, non-jury court heard the 55-year-old victim was shot six times as he took a meal break at the counter in his partner's shop, Shoestown.
A semi-automatic pistol with its serial number removed was found next to his head.
The prosecution did not claim Thompson carried out the actual shooting.
However, the court heard that his DNA was found in two alleged "spotter" cars used in the shooting, and detectives also identified him in CCTV footage as the driver of one of the cars, a Ford Fiesta.
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Thompson’s fingerprints and DNA were found in the Fiesta and another car, a Mitsubishi, also used in the attack.
The cars had been used to deliver the killers to the car used in the murder and to escort the getaway cars to the killing.
The court heard that on the day of the murder, Mr Thompson was seen driving "in concert" with those cars and was captured on CCTV on Meath Street near the murder scene at 4.10pm breaking up a mobile phone and handing the parts to a woman there.
The court accepted that while Mr Thompson did not carry out the murder and did not fire the shots, he was involved in "the intricate advance planning".
Mr Justice Tony Hunt said the Fiesta that Thompson drove that day played a significant role in the murder by escorting the primary and secondary getaway cars into position.
The court found he must have been complicit in the murder and discounted the possibility that by an "appalling coincidence" that he "blundered" on to a murder.
It found the fact that Thompson drove by the murder scene four minutes before the shooting was connected to the killing.
Thompson is well known to gardaí as a member of the Kinahan crime gang.
He is a close associate of the gang's leader in Dublin, Liam Byrne, who's brother David was shot dead at the Regency Hotel in 2016.
Gardaí and Spanish police say Thompson was a chauffeur and bodyguard for the gang and also sourced drugs and guns for it.
He lived in Spain but was arrested for Douglas’s murder by Detective Superintendent Paul Cleary at the City North Hotel in Co Meath, after he flew into Ireland through Belfast for a gang meeting in Dublin.
