Police are appealing for public assistance to help locate missing man Christopher Woodcock.
The 50-year-old was last seen on Evans Street in Lalor about 6.30am yesterday.
He is described as 180cm tall with a solid build, has blue eyes and brown hair.
He was wearing beige sandals, blue pants, a red jumper, black beanie and had a red backpack.
Family and police have concerns for his welfare due to medical conditions.
Police have released an image of Christopher in the hope someone recognises him and can provide information on his current whereabouts.
Anyone with information is urged to contact Mill Park Police Station on 9407 3333.