About 7.30pm (Tuesday 12 December 2017), two off-duty officers were travelling along the Pacific Highway between Woolgoolga and Coffs Harbour when they allegedly observed a motorist driving erratically and threatening other motorists with a knife.

When stationary at traffic lights it is alleged the male driver got out of his car and threatened the occupants of another car with a knife.

The two off-duty officers approached the armed man and identified themselves, attempting to speak to him.

It is alleged that the armed man assaulted one of the officers.

The 40-year-old man was arrested after a brief struggle.

He was taken to Coffs Harbour Police Station where he was charged with menacing driving, wielding a knife and affray.

The man was granted conditional bail and will appear in Coffs Harbour Local Court on 22 January 2018.