Detectives from Transit Crime Investigation Unit are conducting an information caravan at 11am today near Solomon Street and Huntingdale Road, Mount Waverley following a series of incidents which occurred in the area on Tuesday 2 July.
Emergency services were called to the intersection of Solomon Street and Huntingdale Road about 3.20pm after reports that an object had gone through a bus window and struck the driver in the head.
The driver, believed to be a man in his 60s, suffered non-life threatening injuries and was taken to hospital.
It is understood that five other buses and one truck were struck in the same area between 2.30 and 3.30pm.
No one was injured in any of these other incidents.
The area was searched but at this stage no arrests have been made.
There were a number of passengers on each of the buses who left the scene before police arrival.
Investigators would like to speak to them or anyone else who may have information.
Police will hold an information caravan near the intersection of Solomon Street and Huntington Road at 11am today and are urging anyone who witnessed any of the incidents or with any information to come forward.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au