Police are today renewing their appeal for information in the search for a missing man.
Darren Lawler, 31, has not been seen since the afternoon of June 11.
He is originally from Wheatley Hill, but went missing from his home in Blandford Street, Ferryhill at 2pm.
A search of Wingate Nature Reserve has been carried out in connection with his disappearance, but there is still no trace of Darren.
Darren left his home address saying he was going to stay with his dad in the Wheatley Hill area, but never arrived and has not been seen or heard from since.
Police have today renewed their appeal for information regarding the whereabouts of Darren, who has been missing more than 40 days.
Since his disappearance, neighbourhood and response officers, detectives and search specialists have worked to find him.
Searches have been carried out in areas he is known to frequent, hours of CCTV have been trawled and several lines of inquiry remain open and are being investigated.
Members of Teesdale and Weardale Search and Mountain Rescue Team have also searched the Ferryhill area in a bid to find him.
Spennymoor Sergeant Dave Barker, said: “Despite many calls from members of the public with information about possible sightings of Mr Lawler we have been unable to locate him.
“As time passes fears for his well-being are growing and his family are desperate for news about him.
“I would appeal to Mr Lawler to either contact us or his family so that we know he is safe. If anyone thinks they have seen him and can help in any way to trace him we would urge them to call us.”
Mr Lawler is described as white, of medium build, with shortdark brown hair.
He was last seen wearing a grey hoody with dark blue, or black, jeans and white Nike trainers bearing a black tick. Mr Lawler’s right upper arm is tattooed with the name Simon.
Anyone with information is asked to ring 101.