Emergency services are currently at the scene of a crash on the Letterkenny to Manorcunningham dual carriageway.
The fire service, ambulance and gardai are in attendance of the collision which saw a caravan fall on its side on the outbound lane, close to the Manor roundabout.
Gardai say one person has suffered non-life threatening injuries.
Motorists are advised that local diversions are in place and delays are expected.
