Police are appealing for public assistance to help locate missing man Ian.
The 70-year-old was last seen at a care facility in Lower Plenty about 9pm last night.
It's believed he took off in his grey 2008 Toyota Kluger bearing registration plates WIN 313.
Police are investigating whether he attended a petrol station on Diamond Creek Road, St Helena about 11.30am today.
Police and family hold concerns for Ian's welfare as he has medical conditions which require regular medication.
Investigators have released an image of Ian in the hope someone recognises him and can provide information on his whereabouts.
He was last seen wearing a blue jumper, grey tracksuits pants and moccasin slippers.
Anyone who sees Ian or has information on his current whereabouts is urged to call Greensborough Police Station on 8432 0200.
