Police have issued a missing person appeal but have asked the public not to approach the man if they see him.
Mr Ryszars Piotr Stera has been reported missing from the Portadown area.
He was last seen wearing white shorts and a black top and has short black hair and hat.
Police said, "If anyone sees him or a male matching a similar description please don’t approach and call Police as soon as possible .
"Please share as much as possible and contact Police quoting reference 1010 of 13th Sept with any information."