A crash involving two heavy goods vehicles on the M1 has resulted in three men being taken to hospital, police said.
The PSNI said shortly after 10am that both lanes, city-bound, were closed.
They added that the crash was reported to emergency service shortly before 7am.
The Department for Regional Development (which runs the Province’s transport network) said there were “long delays” on the motorway.
None of the casualties’ injuries are thought to be life-threatening.
By around 1pm, the police announced the road had re-opened.