Anyone with information is being asked to come forward.

Gardaí are investigating a fatal assault that occurred outside a premises on Upper O'Connell Street, Dublin at approximately 1.40am on Tuesday, 11 June. A member of An Garda Síochána had observed two men that were in the company of each other. The Garda requested that these men be monitored via CCTV in the area. These men engaged in a physical altercation and the member of An Garda Síochána immediately responded. On arrival, the Garda observed that one male had been stabbed. The officer attempted to render first aid and he was assisted by members of the public. A detailed description of the second male was circulated and a second officer on beat patrol in the Marlborough Street area arrested the suspect. A man (age unknown) was taken to the Mater Hospital with apparent stab wounds. He was pronounced dead shortly after. The man was removed to Dublin City Morgue, where a post-mortem is expected to take place later today (Tuesday) by State Pathologist Dr Margaret Bolster. Superintendent Paul Costello, Store Street Garda Station is asking for the public's assistance as follows: "Any members of the public in the O’Connell Street, Cathal Brugha Street, Marlborough Street areas between 1am and 2am, particularly any member of the public who may have taken any mobile phone footage of this incident or any mobile phone footage or dashcam footage in these streets at that time, are asked to contact An Garda Síochána. "An Garda Síochána are aware that this incident has caused significant disruption within Dublin City Centre this morning, and are working to minimise this disruption as quickly as possible, however, An Garda Síochána is conscious that a full and thorough investigation into this fatal incident must be carried out," he said. Anyone with information is being asked to contact Store Street Garda Station on 01 6668000 or the Garda Confidential line on 1800 666111. .