A 26-year-old Calwell man will face the ACT Magistrates Court over stalking a former work colleague and deliberately crashing into her vehicle.

The man allegedly approached the woman at an Isabella Plains workplace with a large knife.

The woman and one of work colleagues left in two vehicles.

The man allegedly followed the two women in his own vehicle through Isabella Plains and Monash.

When the women stopped at traffic lights, the man intentionally collided with their vehicles, heavily damaging and immobilising all three, including a fourth vehicle.

When Police turned up, they seized two large knives from the man’s vehicle and arrested him.

He now faces charges of stalking, possessing an offensive weapon and use of a weapon dangerous to a person.

Bail will be opposed and police anticipate laying further charges regarding the collision once investigations have concluded