Police are appealing for public assistance to help locate missing man Michael.
The 72-year-old was last seen at a care facility in Heatherton about 12.30pm yesterday, 12 January.
Police believe he left on foot and may be heading to the Dandenong area.
Michael was last seen wearing a black long sleeve top with a skull and eagle motif on the front, black track pants and was carrying a black duffel bag.
Police have concerns for Michael as he has a medical condition which requires regular medication.
He is described as 175cm tall with a solid build and short brown hair.
An image of Michael wearing the top he went missing in has been released in the hope someone recognises him and can provide information regarding his current whereabouts.
Anyone who sights Michael is urged to contact Cheltenham Police Station on 9583 9767.