“One person is currently in a critical condition, with a second person in a serious condition.”
The spokesperson said emergency services remain at the scene.
Motorists travelling through the area are advised to expect delays this morning.
Footage from the scene seen by the Herald shows the crumpled wreckage of two cars sitting on the road at a corner.
Commuters are dealing with heavy traffic as emergency services deal with the situation.
A witness said the roads were “pretty wet” and looked like the cars struck each other head-on as they rounded a bend.
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