A man in his 40's has been detained, and is currently being held at a Garda Station in the county.

Phase two of the north-south flagship project has been completed.

The results of a postmortem examination will determine the course of the investigation, gardaí said

The body remains at the scene which is preserved for a technical examination which is due to take place on Sunday morning.

Kiea McCann (17) and Dlava Mohamed (16) were killed in the collision on July 31st, on the way to their Debs

Kiea McCann (17) and Dlava Mohamed (16) died when the car they were travelling in left the road and crashed into a tree outside Clones, Co Monaghan

A service will be held for Kiea McCann (17) in Clones while a service will be held for Dlava Mohamed (16) in Dublin

The road has been closed pending a forensic investigation, and gardaí are appealing for witnesses.

Two teenagers, Patrick Stanley (16) and Geraldine O'Reilly (15), were killed by the bomb.

Michael Anthony Lynch, known as Tony, was identified by dental records and formally pronounced dead on May 20th, 2020