EXCERPTS of an anonymous letter revealing potential key evidence in the search for the killer of Steven Clark has been released for the first time.

The 23-year-old disappeared in December 1992 while out on a family walk in Saltburn.

Detectives investigating his disappearance received the letter in 1999 which contained information about the suspicious circumstances surrounding the incident.

The Northern Echo: Steven ClarkSteven Clark

Now in an attempt to identify the letter writer, Cleveland Police has released a redacted copy as they continue to treat his disappearance as a murder investigation.

Detective Chief Inspector Shaun Page, who is leading the investigation, said: “This letter is just one of several key lines of enquiry in the case.

“The letter was sent to Guisborough Police Station and is very precise in nature. The letter writer intimated that Steven was dead and that they claim to know the person responsible.

"It was 21 years ago, so the letter writer could have died since then, but if anyone recognises the handwriting, we would urge them to get in touch.”

The Northern Echo: The envelope the letter came inThe envelope the letter came in

Mr Clark's parents, Charles and Doris, were arrested on suspicion of murdering their missing son had their police bail extended last month while investigations continue.

Mr Clark, of New Marske, East Cleveland, expressed his shock following his arrest by Cleveland Police but the force has not confirmed the identity of the two suspects.

DCI Page added: “Steven left his personal belongings at home when he disappeared. His wallet, glasses, and watch. He was a sociable character, and was liked by the friends who knew him.

"He had lived in South Africa until he was around the age of 20, having moved there when he was younger. His life in Marske was different from the more restricted way of life overseas.”

One witness to come forward following an earlier appeal said she was out with her family and has reported that Steven passed them as they were walking on the High Street towards Marske square.

The man, believed to be Steven, was walking in the opposite direction towards The Ship Inn and it hadn’t yet got dark.

The national charity, Crimestoppers, has issued a £10,000 reward for information that leads to the conviction of those responsible for Steven’s death.

Anyone with information is asked to call Cleveland Police on the non-emergency number 101 or can provide information through this online portal here. Crimestoppers can be contacted on 0800 555 111.