She is being questioned at a station in the east of the Republic of Ireland.

Kyran, who was six years old when last seen alive, was reported missing from his home in Drogheda in August.

In October, Gardai launched a murder investigation, saying they were treating Kyran as missing, presumed dead.

Kyran was a pupil at the national [primary] school near his home in Dundalk in 2022.It is understood authorities were told he would be moving to Northern Ireland and attending a new school in Newry.

School officials in Dundalk, where Kyran lived with his mother, were reportedly told at the end of the 2022 summer term that he would be attending school over the border – but that claim was not confirmed.