Two men have been arrested in connection with the murder of a 55-year-old man in Dublin city centre at the weekend.
The men, who are both in their 20s, are being held at Kevin Street and Pearse Street Garda Stations.
Former Irish Independent journalist Eugene Moloney died following an alleged assault on Camden Street on Sunday morning.
Speaking on RTÉ's Morning Ireland, Irish Independent Security Editor Tom Brady said Mr Moloney was on his way home in the Portobello area, when the alleged assault occurred.
He was taken to St James's Hospital, where he was pronounced dead a short time later.
Gardaí have appealed to anyone who was in the area between 3.45am and 4.30am on Sunday morning, particularly those who were close to the pedestrian lights on Camden Street.
They upgraded the investigation to a murder inquiry following the post mortem.
Mr Brady said gardaí are examining CCTV footage of the area and have spoken to a number of people in relation to the incident.
He said Mr Moloney had worked in the Irish News before joining the Irish Independent in the 1980s and was currently working as a freelance writer for the Irish Daily Mail.
He said because of his experience as a journalist in Belfast, Mr Moloney was regularly sent to Northern Ireland to supplement the Belfast office and had travelled extensively around the world.