A further two men have been arrested over the fatal shooting of James Curran in a Dublin pub last week.
Both men, who are in their late 40's, were arrested this morning in the south of the city and are being detained at Kevin Street Garda Station under section 30 of The Offences against The State Act.
Earlier four other men questioned about the murder were released without charge.
The 42-year-old champion kick-boxer was shot in the head during a karaoke session in the Green Lizard pub on Francis Street.
