Police are releasing a new image as part of their continued appeal for public assistance to help locate missing Mount Martha man Jackson.
The 25-year-old was last seen at his work on Lower Dandenong Road in Braeside about 12.30pm on Tuesday, 12 April about 12.30pm.
Jackson has been missing for three weeks now which is very out of character and both police and family have significant concerns for his welfare.
Investigators have conducted extensive enquiries in the weeks since Jackson disappeared, including searches in Mount Martha and surrounding areas.
Jackson is Caucasian, 175cm tall with a thin build, light brown hair, unshaven and an angel tattoo on his right forearm and a nose piercing.
He was last seen wearing black Adidas shorts, a black hooded Nike jumper, and black Vans shoes.
He also had a grey backpack and was wearing a black peak cap.
Police have released the last known image of Jackson, captured at store in Mornington on the day of his disappearance.
It is hoped someone may recognise him and provide information on his whereabouts.
Investigators are appealing for anyone who has seen Jackson since his disappearance three weeks ago to contact the Mornington Police Station on 5970 4900.