The A1 near Banbridge has been closed due to a road traffic collision.
The road northbound has been closed as emergency services deal with the accident.
It is unclear at this stage have many vehicles have been involved.
Local diversions have been put in place and delays are expected.
There are no further details at this stage.
The A1 northbound at Banbridge has been closed due to a road traffic collision. Local diversions are in place.
— PSNI Banbridge (@PSNIBanbridge) December 28, 2016