Roberto was last seen near the Old Steine around 5.45am on Saturday (27 March) and officers are concerned for his welfare.
He is described as 5’8” of a slim build, clean shaven and was wearing a red polo top, a black puffa jacket and dark jeans.
Anyone who sees Roberto or who has information on his whereabouts is asked to report online or call 101, quoting 197 of 27/03.