Two men and a woman remain in custody this morning in connection with the murder of gang leader Eamon Dunne.
Dunne was shot dead in the Faussagh House pub in Cabra in Dublin last April.
The three, who are all in their 20s, were detained at two addresses in Dublin following five searches on Monday yesterday morning in the city and in Bettystown, Co Meath.
The two men are being detained under Section 50 of the Criminal Justice Act 2007 and the woman is being held under Section 30 of the Offences against the State Act 1939.
Two addresses were searched in the city centre, one in Blanchardstown, one in Dublin 7 and one in Bettystown. As well as making the arrests, gardaí from Mountjoy station also found cocaine valued at €70,000 and two handguns.
The two men arrested are aligned to an organised crime gang operating in the north inner city run by two local criminals, one of whom is a sex offender.
The pair have links to the Christy Kinahan international drug cartel in Spain.
The two gang leaders, in their 30s, are well known to gardaí and now form part of the investigation into the murder of Eamon Dunne.
Dunne (34), Dunsoghly Drive, Finglas, was the leader of Dublin's main drugs gang. He assumed control of the Finglas-based gang when its then leader, Martin "Marlo" Hyland, was shot dead by the gang in December 2006.