Police are appealing for public assistance to help locate missing man Zachary.
The 33-year-old Wantirna man was last seen at the Wantirna Mall about 3.40pm earlier today.
Zachary is described as being Caucasian in appearance, approximately 168cm tall, with a slim build and dark short hair.
He was last seen wearing a grey "Super Mario Brothers" t-shirt, grey cargo pants and black runners.
Police and family have concerns for Zachary's welfare due to a medical condition and his disappearance being out of character.
Zachary is known to frequent shopping centres in Knox, Ringwood, Wantirna and Boronia.
Investigators have released an image of Zachary in the hope that someone can provide information on his current whereabouts.
Anyone with information or CCTV/dashcam footage is urged to contact Knox Police Station on 98817000 or Crime Stoppers on 1800333000.
