Police are concerned for the safety of man who is missing from the Mansfield area.
Andrew O'Connor, 34, was reported missing at around noon on Saturday.
A Nottinghamshire Police spokesperson said: "Andrew is originally from the city centre of Nottingham and is likely to make his way back there."
Andrew is described as black, of medium build and is around 5ft 6in tall.
He has shaved short black hair and was last seen wearing a black tracksuit and black long-sleeved top.
If you have seen him or have any information about his whereabouts, call Nottinghamshire Police on 101, quoting incident number 722 of July 28, 2018.