Gardaí are investigating the possibility that a man discovered with serious head injuries on a roadside in north county Dublin was a victim of a hit-and-run.

The man in his 20s was found on the Skerries/Rush road around 2kms from Loughshinney in the early hours of this morning.

He has been removed to Beaumont Hospital and is said to be in a serious condition.

Gardaí found debris near where the man was discovered, which may indicate he was the victim of a hit-amd-run.

Gardaí in Balbriggan are appealing for anyone with information to come forward.