Police have made a renewed appeal for information relating to the disappearance of a man after a crash more than a decade ago.
Kyle Vaughan would have celebrated his 35th birthday on Thursday.
He disappeared on Sunday, 30 December 2012 at the age of 24. He did not return after leaving his home for the evening.
A silver Peugeot 306, which he was driving, was involved in a single-vehicle collision on the same day as he disappeared.
The collision took place on the A467 between Crosskeys and Risca.
Gwent Police initially launched a missing person inquiry but it later became a murder investigation.
Eight people in total were arrested on suspicion of offences in connection with Mr Vaughan’s disappearance.
They were all later released without charge.
‘Desperate for answers’
Detective Chief Superintendent Nicky Brain said the force’s investigation “remains very much active” and they continue to be in “regular contact with his family”.
“Officers from our major incident team continue to investigate any information that we receive from members of the public,” DCS Brain said.
“As part of this extensive investigation, we have to date conducted searches in 40 areas, interviewed in excess of 200 people, received more than 180 intelligence logs and taken nearly 900 witness statements.
“Unfortunately though, we still don’t have the answers we need and Kyle’s family, who’ve never given up hope of finding out what happened to him, so desperately want.”
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Crimestoppers Wales are offering an increased reward for information which could assist the investigation.
Hayley Fry, Crimestoppers Wales national manager, said Mr Vaughan’s family are “desperate for answers”.
“We are hoping our renewed appeal and increased reward will remind the public about this case and the important role they can play in seeking justice for Kyle’s family and friends,” she added.
“We believe that somebody knows what happened to Kyle.”
Gwent Police have opened an online portal on Thursday which will remain open for three months.
Members of the public are urged to submit information relating to the investigation into Mr Vaugahan’s disappearance either through the online portal or by getting in touch with Crimestoppers.