A witness to a Melbourne road rage incident says up to six men attacked a truck driver and smashed his windscreen with a metal pole
Police said the truck driver clipped the side of the van while on the Bolte Bridge about 8am on Thursday.
The occupants of the van followed the truck to Inglis Street at Port Melbourne where they allegedly then used a metal bar to damage the windscreen of the truck.
Witness Andrew told 3AW at least six men, who appeared to work for the same company, began to attack the man.
"They all ran to the cab and pulled him out of his truck, they were hitting him in the street and one of the guys was hitting his truck and within seconds the police were there," he said.
"They started attacking the police, they got really aggressive with police."
A 31-year-old Roxburgh Park man was taken into custody but was later released pending further inquiries.
The investigation is ongoing, a police spokeswoman said.
There are no reports of injuries.