Gardai believe Katie Taylor's father was the target of a shooting in Wicklow this morning which left a man in his 50s dead.
57-year-old Pete Taylor suffered non-life threatening injuries in the incident at Bray Boxing Club, while another man, aged 35, is seriously injured.
Meanwhile, a van believed to have been used in the attack has been located in Dublin.
Gardai are currently at the scene on Pigeon House Road in Ringsend, which has been sealed off for a technical examination.
Gardaí previously made an appeal for information on a silver coloured Volkswagen Caddy with Northern Irish plates.
It’s understood at least one gunman entered Bray Boxing club – which was set up by Katie Taylor’s day Pete - just before 7am and opened fire.
Anyone with information is asked to contact Bray Garda Station on 01 6665300.