Four people have been arrested in connection with the murder of Paulus Bilyas in the Dublin suburb of Blanchardstown last June.
Gardaí arrested three men – aged 36, 24 and 21 – and a 32-year-old woman this morning.
All four are being detained at Finglas and Blanchardstown garda stations under Section 4 Criminal Justice Act.
Mr Bilyas' body was discovered in a house in the Pheasants Run estate on 25 June last.
He was from Lithuania and had lived in Ireland for two years.
A post mortem subsequently found that the 31-year-old had suffered head injuries.
