Police are appealing for public assistance to locate missing Manor Lakes man Riley.
The 19-year-old was last seen at McDonalds on Rail Circuit in Mambourin about 4pm on Saturday, 14 March.
Police and family are concerned for Riley's welfare as he has Autism and may have trouble asking for assistance.
Riley is likely utilising public transport and likes to visit train lines and stations in Victoria.
He was last seen wearing a grey jumper, dark brown tracksuit pants, black "Nike" shoes and construction-style ear muffs. He was also carrying a small black cross-body bag.
Police have released an image of Riley in the hopes that someone can provide information on his whereabouts.
Anyone with information is urged to contact Werribee Police Station on (03) 9742 9444.
