Gardai arrested a man in his 40s and a woman in her 30s this morning.
They're being detained at Pearse Street Garda Station.
At around 11am yesterday morning gardaí were called to an incident at Markievics House on Townsend Street.
A man in his 50s was found with a stab wound and taken to St James' Hospital where he was later pronounced dead.
Gardaí have not yet launched an official murder investigation as they are awaiting the results of a post mortem which will take place this afternoon.
They say they are investigating all of the circumstances surrounding the death and that the scene remains sealed off.
An Tóchar To Face Blessington In Wicklow Senior Football Final
Wicklow's New Homes Carry Highest Price Tags Outside Of Dublin
Wicklow Joins National Call For Family Court Reform As Communities March To Protect Children's Voices
Inspiring Laragh Woman Wins London Business Book Award - How Lollipops Changed Everything!
Free Child Car Seat Checks Return to Wicklow Next Week