About 3.05pm on July 19, a man was travelling north along Hume Fwy at Wallan when he became involved in a road rage incident with the driver of another vehicle.
The offending vehicle swerved several times towards the victim’s vehicle, forcing him to take evasive action to avoid a collision.
The offending driver’s behaviour began on the freeway at Wallan immediately prior to the off-ramp into Wallan, and extended for several kilometres.
At one point, the offending vehicle took up a position beside the victim’s vehicle and the offending driver pointed what is described as a handgun at the victim before throwing an unknown metal object towards the victim’s vehicle.
The victim and the offending driver continued north along the freeway.
The offender is described as 30 to 40 years old, Caucasian, about 6ft tall, large to fat build, with short receding strawberry blond hair and green or hazel eyes, light skinned with reddish cheeks and heavily freckled.