Transit Safety Division officers are calling for public assistance after a bus driver was spat on in East Melbourne last month.
The 246 bus from Elsternwick to Clifton Hill was travelling on Punt Road about 8.30am on Tuesday, 25 August.
A passenger approached the driver and verbally abused him before spitting in the driver's face three times. He then tried to punch the driver around the protective screen.
The bus driver stopped near the intersection of Wellington Parade and Hoddle Street in East Melbourne and directed the offending passenger to get off the bus.
The offender ran off towards West Richmond Railway Station.
The man is perceived to be of African descent and was wearing a black beanie and a black jacket with a red collar.
Investigators have released images of a man who may be able to assist with enquiries.
Anyone with information on the incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au
