A woman has been arrested in connection with the murder of missing schoolboy Kyran Durnin.
Kyran Durnin was reported missing in August of this year.
Tusla said it had alerted gardaí to a significant concern about the eight-year-old and that while he was not in its care, it had engaged with him and his family.
Gardaí had originally been told Kyran was last seen alive two days before the missing person’s report was filed.
It has since emerged he had not been seen since May 2022, when he had been a pupil at a local primary school in Dundalk.
Kyran previously lived at a house in Dundalk for a number of years which gardaí searched in October as part of the murder investigation.
Gardaí had said the tenants who lived at the property at the time of the search were in no way connected to Kyran or his disappearance.
The woman, who is believed to be in her 20s, is being detained at a garda station in the northeast of the country under section 4 of the Criminal Justice Act.
She can be questioned for up to 24 hours.
Gardaí in Drogheda are continuing to appeal for information in relation to the murder of Kyran.
They have also stressed that people with information should contact the investigation team no matter how insignificant it may seem.
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Tusla, the Child and Family Agency, previously conducted an internal review into its interactions with Kyran and his family.
Tusla said it would not be making the review public but it has been shared with Minister for Children Roderic O’Gorman.
A separate report requested in relation to information held by Tusla’s Education Support Service (TESS) has been shared with Minister for Education Norma Foley.
The review report has also been made available to the National Review Panel, whose responsibility it is to independently review cases of serious incidents involving children in care or known to Tusla.