Police are appealing for public assistance to help locate missing Blackburn man Donald.
The 81-year-old was last seen in Mooroolbark on 28 December.
It is believed Donald may be travelling in a white campervan with registration 1JU20V, possibly headed towards the Gippsland area.
Investigators are looking into a possible sighting of Donald's campervan on Koo Wee Rup Road in Pakenham on 12 January about 4pm.
Police and family have concerns for Donald's welfare as it is out of character for him to not keep in-touch.
Donald is Caucasian in appearance, has an obese build, white hair and beard and may be wearing glasses.
Images of Donald and his campervan have been released in the hope that they may lead to information on Donald's current whereabouts.
Anyone who sights Donald or his campervan or has information is urged to contact Box Hill Police Station on 8892 3200.
