Emergency services are currently dealing with a road traffic collision on the A1 this morning (Wednesday).
The crash happened close to Loughbrickland before 9am.
Police are advising motorists to take an alternative route.
A PSNI spokesperson said: “Motorists are advised of delays on the A1 at Loughbrickland due to a road traffic collision.
“Drivers should be cautious of their speed when approaching the area and seek an alternative route for their journey if possible.”
11AM UPDATE: Traffic is now moving well on the A1 near Loughbrickland following earlier delays from a road traffic collision.