Police are appealing for public assistance to help locate missing 86-year-old Clarinda man Costas Christodoulou.
Costas was last seen at his Carbine Avenue, Clarinda home about 3.30pm on 10 December.
He spoke with family over the phone at about 11.30am yesterday and it is believed he was still home at that time however has not spoken with family been seen since.
Police and family have concerns for his welfare due to his age, the length of time he has been missing and as he has a medical condition which can cause him to become disoriented.
Costas does not drive and may be using public transport, he is known to frequent the Clarinda, Clayton and Goongerah areas.
He was last seen wearing light green pullover and grey trousers, and is usually wearing a hat.
Investigators have released an image of Costas in the hope that someone may recognise him.
He is described as 158cm tall, is bald with brown eyes, average build and may have stubble.
Anyone who sights Costas or has information on his whereabouts is asked to contact Moorabbin Police Station on 9556 6565.