Police are appealing for public assistance to help locate missing Boronia man Robert.
The 89-year-old was last seen in Diamond Creek around 12.20pm on Wednesday, 4 October.
Police and family have concerns for Robert's welfare as his disappearance is out of character.
Robert is Caucasian, about 157cm tall, of medium build with grey hair.
He was last seen wearing khaki-coloured overalls cut off just below the knees, with a flannelette shirt underneath and black slippers.
He may be travelling in a blue 1996 Holden Rodeo Utility with registration NSJ057.
Investigators have released an image of Robert in the hope that someone can provide information on his current whereabouts.
Anyone who sights Robert or has information on his whereabouts is urged not to approach him and to contact Boronia Police Station on (03) 9760 6600.
