Dublin. The bodies of three children, two boys and a girl, have been discovered.
A woman in her 40, was found at the scene, was taken to Tallaght Hospital.
Irish police have described the deaths as "unexplained".
It is believed the family moved to Newcastle about a year ago.
The community of Newcastle is coming to terms this morning following the discovery of deaths of three young children last night.
Gardaí found her on the street near her house it was only when they entered the home that they came upon the deeply disturbing scene and saw the bodies of the three small children. A note was also found at the scene.
Three children found dead in a house in Co Dublin have been named as brothers and sister Conor, Darragh and Carla McGinley.
Neighbours, including parents with young children, attended the house throughout the morning leaving flowers at the door of the home which was guarded by a number of officers as forensic investigators continued inside. She was taken to Tallaght Hospital and there are hopes she can speak to detectives soon.
Gardaí say the results of the post mortem will determine the cause of death of the children.
According to a garda spokesperson, a family liaison officer has been appointed and is in contact with the father and extended family.
"My thoughts are with everybody impacted", the Fine Gael representative said.
Anyone with information in relation to this incident is asked to contact Clondalkin Garda station on 01-666 7600.