Police are appealing for public assistance to help locate missing man Tony Tsarkis.
The 78-year-old was last seen in Carnegie about 6.30am.
Tony is described as having a slim build with short grey hair and speaks limited English.
Police and family have concerns for his welfare due to medical conditions.
He is known to frequent the Duncan McKinnon reserve and Carnegie library areas.
Investigators have released an image of Tony in the hope that someone may be able to provide information on his current whereabouts.
Anyone with information is urged to contact Bayside Police Station on 8530 5100.