A man is being interviewed by gardai after a 47-year-old woman was found dead in a house.
Detectives were alerted after an ambulance crew was called to the property off Blackhorse Avenue in the Cabra area of north Dublin.
The house on McKee Park has been sealed off.
A Garda spokesman said the man had not been arrested but was helping officers with inquiries.
He has been taken from the home to Bridewell Garda Station for interview.
The State Pathologist's office has been called in to carry out preliminary examinations and a post mortem is expected to be carried out later.
The body remained inside the house.