Police are appealing for public assistance to help locate missing man Lubomir Nicovski.
The 61-year-old was last seen at a home in Saturn Court in Wheelers Hill on Sunday 8 December about 3.30pm.
Police and family have concerns for Lubomir as he has a medical condition and is unable to interact with people.
He is described as having a tanned complexion is about 165cm tall with a slim build, brown hair which is balding on top and no facial hair.
He was last seen wearing a white and black Adidas polo top, blue jeans and blue shoes.
It is believed he may be in the vicinity of Brandon Park Drive, Lum Road or Phoenix Drive in Wheelers Hill or in the vicinity of shopping centres in Brandon Park, Waverley Gardens and Rowville.
Investigators have released a photo of Lubomir in the hope someone may recognise him and be able to provide information on his whereabouts.
Anyone with information is urged to contact Glen Waverley Police Station on 9566 1555.