The Mayo Fire Service and Gardaí are currently at the scene of a large gorse fire in West Mayo.
Emergency services were alerted to the blaze in between Killawalla and Partry shortly before 1pm this afternoon.
The Westport and Ballinrobe Fire Units are at the scene tackling the blaze.
Midwest News understands that the fire has spread across the road.
Motorists are urged to divert form the route if possible, as smoke from the fire is causing considerable traffic delays.
Gardaí will be conducting traffic management in the area over the course of the afternoon.