There are lengthy delays on the route, from Hillsborough to Ballymany.
A collision has occurred on the M7, southbound.
It has taken place just after the M9 turn-off.
Emergency services, including ambulance personnel, are attending the scene.
There are, however, lengthy delays, reportedly of over 1 hour.
Traffic is tailing back to Hillsborough.
Delays on the M7 Westbound from Junction 12 (Newbridge) to Junction 11 (M7/M9 Interchange) due to incident. Road closed at Junction 12, follow diversions.
— TII Traffic (@TIITraffic) September 22, 2021
Delays reduced throughout the course of Wednesday afternoon, but tailbacks of around 25 minutes in duration remained by 5pm:
Update: Delays on the M7 Westbound from Junction 12 (Newbridge) to Junction 11 (M7/M9 Interchange) due to incident. Lane 2 reopened.
— TII Traffic (@TIITraffic) September 22, 2021