Gardaí and emergency services are at the scene of a multi-vehicle crash on the M50.
The rush-hour collision happened in the southbound lane at Junction 6, Blanchardstown.
The road is currently blocked, while the vehicles are cleared.
AA Roadwatch advise that delays are now back to Junction 4 Ballymun.
Meanwhile, in the northbound lane, traffic is busy between Junction 10, Ballymount and Junction 9, the Red Cow.
Gardaí say traffic is beginning to move again though.