Police have launched a fresh appeal to find missing man David Bennett.
The 30-year-old was last seen by his family when he left his home in Shiney Row on August 18.
Officers leading the search were informed by a member of the public that he was spotted on Weymouth Drive, Shiney Row, shortly after 1am on Sunday August 19.
But there have been no sightings of him since.
Police say they are growing increasingly concerns for his welfare and are now appealing for help from the public.
David is described as 6ft, of slim build, with short brown hair and possibly wearing blue jeans, a blue Barbour jacket and trainers.
Sergeant Rob Bagshaw of Northumbria Police said: "This is really out of character for David, and as a result, his family and police are growing increasingly worried.
"David has been missing for a number of weeks now, and our efforts are ongoing to locate him and return him safely to his family.
"However, I would ask any member of the public who has not yet come forward ans has information regarding David's disappearance, or who thinks they have seen him in the last few weeks to get in touch."
David, or anyone who might have information about his whereabouts, are asked to contact police on 101 quoting reference 589365.