Post-mortem examinations have been carried out on the bodies of two children who died in a car fire near Multyfarnham, Co Westmeath.
Gardaí have confirmed the baby boy was two-years-old while the girl was aged five.
The results of the post-mortem examinations are not being released for operational reasons.
A woman, believed to be their mother, was seriously injured in the incident which happened at Lackan around 4pm yesterday evening.
The Coole road outside of Multyfarnham has now reopened following an examination of the scene.
Passers-by spotted the car and alerted gardaí, and when they arrived, the car was ablaze.
Forensic examination of the vehicle by the Garda Technical Bureau is continuing.
The woman was treated at the scene and later airlifted to a Dublin hospital.
Her injuries are understood to be serious but not life-threatening and she is continuing to receive treatment in hospital.
The baby boy was taken by ambulance to Regional Hospital Mullingar, where he was pronounced dead.
The remains of the five-year-old girl were found inside the car.
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State Pathologist Dr Sally Anne Collis was at the scene last night and concluded her post-mortem examinations on the two children this evening.
A garda family liaison officer has been appointed, and gardaí say they will continue to support the family involved in conjunction with other State agencies.
An incident room has been set up at Mullingar Garda Station and a senior investigating officer has been appointed to lead the investigation.
Gardaí are appealing to anyone with any information in relation to the incident to contact them at Mullingar Garda Station on 044 938400 or the Garda Confidential Line 1800 666 11.
The small community of Multyfarnham is trying to come to terms with the tragedy.
As a mark of respect, the local GAA club has cancelled all underage games and training for boys and girls this weekend.
A purple plant was placed at the garda cordon this morning by a man who did not wish to be identified. A card with it reads "sleep little angels, from your senior infant friends".