The road is currently closed and local diversions are in place.
Emergency services are at the scene of a crash in the midlands.
Two vehilces collided on the N4 in Westmeath, just off the Lough Owel Viewing Point, shortly before 7am this morning.
One person has been taken to the Midlands Regional Hospital Mullingar for treatment of what's believed to be serious injuries.
The road is currently closed and local diversions have been put in place.
Investigations are ongoing.
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