It's understood one persons been seriously injured in a crash in Dublin this morning.
Emergency services are currently dealing with the incident that happened on the Naas Road at around 6.30am.
Commuters are facing major traffic delays with tailbacks being reported at Newlands Cross.
Traffic traveling outbound on the N7 Naas Rd is being asked not to take Red Cow exit. From Tallaght (N81) traffic can continue to Saggart and rejoin at Rathcoole. >From Lucan (N4) traffic can exit at J4 and go through Newcastle and rejoin at Rathcoole.
Traffic continuing on the N7 from The Red Cow is being diverted at Newlands Cross where there are tailbacks due to the volume of traffic taking this route.