A £10,000 cash reward has been offered for information resulting in a conviction in the murder investigation of a missing man.
Crimestoppers is offering the money in attempt to help get vital evidence in the case of Steven Clark's disappearance in December 1992.
The 23-year-old went missing while out on a family walk in Saltburn.
A cold-case murder investigation was launched earlier this year and Mr Clark's parents, Charles and Doris, where arrested on suspicion of his murder.
The couple, from Marske, east Cleveland, had their bail extended until December earlier this month.
Cleveland Police launched a public appeal for information and the charity has stepped forward to offer its support to the investigation.
Ruth McNee, Regional Manager for the North East at Crimestoppers, said: “After all these years, it it’s so sad to think that no one has come forward to say exactly what happened to this young man.
"We are hoping that someone who may have been sitting on information about Steven’s murder will now have the courage to do the right thing and tell us anonymously about who is responsible for Steven’s untimely and unsolved death.
“We are appealing to anybody who may have witnessed what happened or who knows about those who were involved or may have been his acquaintances. You can tell our charity what you know 100 per cent anonymously. Always. What you tell us can make all the difference."
Detectives are also trying to trace the author of an anonymous letter which was posted to Guisborough Police Station on September 24, 1999.
The contents of the letter have never been published by police for operational reasons.
Officers carried out a search of the area around Mr Clark's home, including school playing fields opposite the family property.
Detectives from the Cleveland and North Yorkshire Cold Case Unit reopened the case earlier this year. They believe that Steven has come to serious harm and a murder inquiry was launched.
- Anyone with information can pass it on confidentially either online at Crimestoppers-uk.org or by calling freephone 0800 555 111. Alternatively, you can call Cleveland Police on the non-emergency number 101.
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