A 57-year-old man, who is known to have links to Skegness, has been missing since Monday.
Gary Hardy was last seen in Long Eaton on Monday, December 3 with Derbyshire Police appealing for information as to his whereabouts.
Gary is described as white, 6ft 2ins, and of large build, with long black hair.
He is thought to be carrying a grey Lidl rucksack, police said.
Anyone who has seen Gary, or knows of his whereabouts, should contact Derbyshire Police on 101 quoting reference number 117 of December 4.
It can also be reported anonymously through Crimestoppers on 0800 555 111.