Gardaí have arrested a total of seven people in connection with the murder of a man in Sligo last August.
Tom Ward (23) from Cranmore, died after being hit with an axe as he sat in a van outside his parents' home.
Mr Ward was married and had a two-year-old daughter.
An axe and a number of balaclavas were recovered from an abandoned car four miles from the scene of the murder.
The seven people are being held at Garda stations in Sligo, Carrick-on-Shannon and Castlebar and Manorhamilton.
They are all being held under section 30 of the Offences Against the State Act and can be held for up to 72 hours.
