The pedestrian was taken to hospital for treatment of non-life-threatening injuries.

Footage of the alleged incident has been circulating on social media

Dylan McCarthy (29) was found unresponsive at the scene and was taken to Tallaght University Hospital where he was later pronounced dead.

Nearly 200 children under the age of nine were hospitalised due to cycling crashes or accidents last year.

The collision happened on the southbound side of the motorway at exit 14 near Leopardstown