CONCERN is mounting for a missing man who is believed to have a firearm with him.
Police are appealing for information on the whereabouts of 64-year-old Derek John Upton.
Mr Upton was last seen early on Sunday morning.
Police say Mr Upton, of Caldicot, is not a danger to the public but they are urging people not to approach him.
A Gwent police spokesman said: "There are concerns for Mr Upton's welfare as he has been extremely depressed over the last few days.
"He is believed to be in possession of a firearm, although police have no information to suggest that he is a danger to the public."
The last sighting of him was on the Moor at Rogiet, an area of land between the M4 and main railway line.
If anyone has information they are asked to call Gwent Police on 01633 838111.
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