Two people have been arrested as part of an investigation into an explosion at a petrol station in County Donegal which killed 10 people in 2022.
A five-year old girl was among the victims of the blast in Creeslough on 7 October.
The man and woman, both aged in their 40s, were arrested on Monday morning and are being detained in separate police stations in County Donegal.
Gardaà (Irish police) said they were being questioned over alleged offences contrary to the Non-Fatal Offences Against the Person Act 1997.
Creeslough is a small village in the north-west of Ireland, about 15 miles (24km) from Letterkenny and 30 miles (48km) from the border with Northern Ireland.
It has a population of about 400 people.
The victims – four men, three women, two teenagers and a five-year-old girl – were from the village or surrounding areas.