The four members of the Flood family, who died at their home in Conroche, Co Wexford at the weekend, are to be buried together on Friday.
Diarmuid Flood (41), his wife Lorraine (38) and their children Mark (6) and Julie (5) were found dead inside their burning home in the early hours of Saturday.
Gardaí are investigating a number of theories in an effort to find out the exact circumstances surrounding the deaths.
A postmortem confirmed Diarmuid and Lorraine died of single gunshot wounds. The cause of the children's deaths remains unknown. However, they did not die because of the fire or suffer physical trauma.
Gardaí have refused to comment on speculation that the children may have been sedated prior to the fire. The cause of their deaths is not likely to emerge until toxicology tests are completed.
The Removal will take place on Thursday evening, arriving at St Clement's Church in Cloughbawn, Clonroche at 7pm.
The Requiem Mass is at 2pm on Friday followed by burial in the nearby cemetery.
A book of condolences has been opened at the town hall in New Ross, 16 km (10 miles) from the village of Clonroche.
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