Lawyers for Tusla are due back in the High Court today as part of a legal action involving two children at the centre of serious abuse allegations.
Their foster parents initiated the proceedings after the Child and Family Agency decided to return them to their natural parents.
After spending 29 days trying to secure permanent care orders for the children, Tusla withdrew its application last May.
In early July, lawyers for the foster parents claimed the agency still believed they had been exposed to sexual abuse in the family home, and questioned why Tusla decided they should be reunited with their natural parents just a few weeks later.
To return the children, now aged six and nine, without properly investigating the allegations would expose them to an unacceptable risk, it was argued.
They are looking for the High Court to protect them by making them wards of court and ultimately deciding the best course of action for them.
Counsel for Tusla and the natural parents will be given an opportunity to respond when the hearing resumes this morning.