His body was found in Tyrrellstown on Sunday
Garda teams are examining the scene where a man aged in his 50s has died suddenly in north Dublin.
His body was found at his home in Mount Eustace in Tyrrellstown on Sunday after the alarm was raised at around 4.30pm.
A post mortem on the man's remains is due to take place on Monday.
Detectives say the results will determine the course of their investigation.