A truck driver who crashed into a Dart line before fleeing the scene was slammed as "reckless and idiotic" today.

Gardaí in Dublin are appealing for witnesses to an incident in Dublin this morning in which overhead railway lines were destroyed.

Dart and rail passengers along the east coast are facing severe disruption for much of today.

The M1 between Newry and and Jonesborough has been closed for a security operation this morning after a suspicious vehicle was discovered.

Motorists can expect some serious delays as the competitors in this year's Dublin marathon make their way around the city.

A man was killed when he was struck late last night by a train in Dublin.