Vic man uses metal bar in road rage attack

A man has smashed the windscreen of a truck using a metal bar during a road rage incident in Melbourne.

Police say the truck driver clipped the side of the van the man was in while on the Botle Bridge about 8am on Thursday, before the man followed the truck to Port Melbourne and then used a metal bar to damage its windscreen.

A 31-year-old Roxburgh Park man is currently assisting police with their inquiries.