The body of a man which was discovered in a caravan near Beckingham had been there for more than six weeks.
The body of the man, who was no older than 50, was discovered by a member of the public in a static caravan on a building site off Gringley Road at around 12pm on Thursday 13th March.
A post-mortem examination was completed on Monday 24th March and established that the man had been dead for more than six weeks.
He was around 5ft 8ins to 5ft 10ins tall, of medium to slim build and had collar-length dark wavy hair.
His ethnicity is unclear.
He has no discerning marks on his body, no tattoos or piercings, and there were no obvious signs of injury.
He was dressed in a grey Slazenger round collared t-shirt under a blue Umbro zipped tracksuit top.
Over this was a blue Levi denim jacket.
He was also wearing blue BugJo jeans and white Slazenger trainers.
Det Insp Ash Wilson said: “Following the pathologists findings we’re treating this death as unexplained, but at this stage do not believe there was any foul play.”
“We think this unknown man may have entered the caravan for shelter and subsequently died there.”
“He had nothing but the clothes on his back with him.
“No phone, no wallet, nothing to identify him.”
“He does not match the description of any of our missing people and no one has called us concerned for the welfare of a relative or friend matching his description.”
“We have run his fingerprints on our systems without a hit and we are now pursuing DNA testing.”
“We are also circulating the scant details we do have with other forces and Interpol.
“In the meantime I would like to appeal to anyone who thinks they may know who he is, or has any information to call us.”
Chairman of Beckingham Parish Council, Coun Kevin Senior, said events such as this are very unusual for the village of Beckingham.
He said: “This is not something that I have remembered in my time out here. I have never known it before.”
“But until we find out who it is we can’t speculate on the reasons why.”
“But as a council we are saddened by the fact that someone has died.”
“All human life is worthy of being helped.”
If you know who the man is or have any information contact police on 101, quoting incident 286 of 13th March 2014, or alternatively call Crimestoppers anonymously 0800 555 111.