The killing is claimed to be in revenge for the death of an associate in 2012.
Irish nationalists opposed to Northern Ireland’s peace process have told broadcasters they were behind a fatal shooting at a Dublin hotel last week.
Continuity IRA has claimed responsibility for the fatal shooting at the Regency Hotel https://t.co/8og40w2sfP pic.twitter.com/qVfnwu2XLh
— TheJournal.ie (@thejournal_ie) February 8, 2016
Continuity IRA tells BBC it carried out shooting in Dublin on Friday
BBCNewsNI</a> <a href="https://twitter.com/JohnMooneyST">JohnMooneySTrte</a> <a href="https://twitter.com/DearbhailDibs">DearbhailDibs pic.twitter.com/veZ7EQ4ALo— Vincent Kearney (@vincekearney) February 8, 2016
One man was killed and two others were wounded when gunmen dressed as police officers opened fire at a boxing weigh-in.
The Continuity IRA say it was in retaliation for the killing of an ally in 2012.