Emergency services are at a crash on the M9 southbound between Junction 4 Castledermot and Junction 5 Carlow.
This section of the Motorway has been closed temporarily with diversions in place.
Motorists are advised to take caution on approach.
There is debris on the road due to damage caused to vehicles.
Passers-by said: “Just passed this accident scene heading northbound. Road completely closed heading south.”
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.