Three vehicles were stoned and another burned beyond repair by an unidentified group of protesters on the N2 this afternoon (06/06/17).
The incident happened about 500m before the Motherwell turn-off.
The protesters also threw petrol bombs at cars travelling on the N2.
When police arrived at the scene, the protesters quickly ran into nearby bushes.
The group left behind a bucket containing four petrol bombs which was confiscated by the police.