The public has been asked for information about the movements of a gunman who killed one man and injured two others in a shooting at Bray Boxing Club yesterday morning.
Bobby Messett, a 50-year-old father-of-three from Kilmacanogue in Co Wicklow, died while Pete Taylor and another man were injured.
Mr Taylor is the father of world and former Olympic boxing champion Katie Taylor.
His injuries, and those of the other man, have been described by gardaí as not life-threatening.
They are still being treated in hospital.
A gunman entered the boxing club just before 7am and fired a number of shots.
It is believed he was wearing a high-visibility jacket and had his face covered.
Gardaí say the gunman left the scene at Bray Harbour in a silver Volkswagen Caddy van with Northern Irish registration plates.
The van travelled through the Shankill and Cornelscourt areas of south Dublin to the Pigeon House Road in Poolbeg, where it was abandoned at 8.05am.
A man was seen leaving the van and cycling away, gardaí said.
Gardaí are appealing to anyone who witnessed the movements of the van along the route travelled between 7-8am yesterday morning to contact them.
In particular, they would like to hear from anyone with dashcam footage from along this route.
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The Taylor Made Boxing Gym paid tribute to Bobby Messett on the gym’s Facebook page today.
The message said Bobby had been a member of the gym for the past eight years and that he would be dearly missed.
Mr Messett was among a group of at least 15 people who were in the gym for an early morning fitness session when the attack occurred.
He died at the scene.
As well as being a father of three children, he was a grandparent with three grandchildren.
Mr Messett was involved in a number of sporting clubs in north Wicklow, including Bray Wheelers Cycling Club and Glencormac United Football Club.
Lifelong friend and Glencormac Utd senior team manager Colm Mulligan has described Mr Messet as "one of the nicest, easygoing chaps you could ever meet".
Speaking on RTÉ's Morning Ireland, Mr Mulligan said the local community was "absolutely devastated" by Mr Messet's murder and it was "heartbreaking" for his family.
"I’ve known Bobby for 45 years, he’s only born down the road from me in Glencormac. He’s just one of the nicest, easygoing chaps you could ever meet," said Mr Mulligan.
He said Mr Messett was "a great all-round sportsman and fitness fanatic" who did a lot of charity fundraising through sports.
Mr Mulligan said the common theme among tributes being paid to Mr Messet was that he was a "genuine pure gentleman".
He added: "Bobby offended no one. It is just so unfortunate, heartbreaking."
The President of Bray District Chamber of Commerce described yesterday's shooting as horrifying and extended condolences to the family and friends of Mr Messett.
Pat Ó Suilleabháin also sent his best wishes for the recovery of the two men injured who remain in hospital.
He said the shooting was a total shock and the last thing you expect in a place like Bray.
Additional reporting Colman O'Sullivan