Police are appealing for public assistance to help locate missing man Robert Grimaldi.
The 30-year-old was last seen on Kinkora Road in Melton on Friday.
Police and family have concerns for his welfare as his disappearance is out of character.
He si described as being about 175cm tall, average build with a shaved head, tattoos on his arms, back and chest.
He is known to frequent the Bacchus Marsh area.
Investigators have released an image of Robert in the hope someone knows of his current whereabouts.
Anyone who sees Robert or has information on her whereabouts is urged to contact Keilor Downs Police Station on 9365 3333.