Two men have been arrested in connection with a fatal explosion in Donegal.
The incident happened in October 2022 at a petrol station - killing 10 people.
The men are both aged in their 50s and are being held at Garda stations in Donegal.
Officers say the investigation continues - and is being co-ordinated from Milford Garda Station.
To date, the inquiry has involved help from local Gardaí, a national investigative branch of the force, Health and Safety Authority as well as the Commission for the Regulation of Utilities.
10 people died in the explosion - aged between 5 and 59.
Following the incident then-Taoiseach Micheal Martin described it as the "darkest of days for Donegal and the entire country."