Sussex Police are trying to trace Frederick Sefton, who has been missing since November 22.
Frederick, 27, from Eastbourne, is described as 5’8”, pale, thin and with collar-length dark brown hair. He may be wearing a light blue hooded jacket and dark shorts, and carrying a brown bag, say police.
There have been sightings of Frederick in Brighton.
PC Jo Seabridge, of the East Sussex missing persons team, said, “Fred is not in any trouble, but we are concerned for his welfare and it’s important that he’s seen by an officer face-to-face.
“We’d greatly appreciate it if Fred himself, or anyone who sees him or knows where he might be, would get in touch as soon as possible.”
They can do so by reporting online or by phoning 101, quoting serial 927 of 22/11.