Four men have been arrested in connection with the murder of 21-year-old Lorcan O'Reilly on Halloween night.
Lorcan (pictured) was stabbed to death at the Oliver Bond apartment complex in the early hours of the morning on November 1.
This morning gardaí arrested four men in relation to the murder.
All four are being detained at Kevin St, Kilmainham, Donnybrook and Sundrive Road Garda Stations under Section 30 of the Offences Against the State Act.