Police are investigating the circumstances surrounding an attempted armed robbery at a Victorian milk bar last month. Investigators have been told a man entered the Forest Road, Ferntree Gully milk bar armed with a knife and demanded goods and cash just after 9am on 24 September. The man left empty handed and fled on foot in a northerly direction. No one was injured during the incident. Investigators have released an image and CCTV of a man they believe may be able to assist with their enquiries.