A man has been seriously injured in a crash on the Swords Road.
The pile-up happened just before nine this morning.
A number of other people have also been taken to hospital as a precaution.
It's believed seven vehicles were involved in the crash.
The road remains closed in both directions as Forensic Collision Investigators examine the scene.
It's after the worst weekend for deaths on our roads so far this year.
Seven people were killed in collisions, in counties Louth, Monaghan, Cavan and Galway, bringing the total for this year to 29.
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