Gwent Police are continuing their appeal for information to find out what happened to Kyle Vaughan 12 years on from his last known sighting.
The Newbridge man, who was aged 24 at the time, was last seen at about 11.45pm on 30 December 2012.
The car he was driving, a silver Peugeot 306, was involved in a single vehicle collision on the A467 between Crosskeys and Risca.
Initially Police launched a missing person investigation, which became a murder enquiry after eight people were arrested in connection with his disappearance; all were later released without charge.
Detective Chief Superintendent Andrew Tuck, the senior investigating officer, said:
“Kyle would be 36 now and our detectives continue to work on this case, following up any lines of enquiry that emerge.
“His family have lived with unanswered questions for so long and we remain in regular contact with them as we continue our efforts to find out what happened to him.
“I’m urging members of the public to contact us with any information they have, no matter how small it may seem, please come forward.”
“If you have any information in relation to Kyle’s disappearance, you can call us on 101 or send us a direct message on social media, online at www.gwent.police.uk or via email contact@gwent.police.gov.uk, quoting log reference 397 30/12/12.
“There is also a section of the major incident police portal (MIPP) where the public can submit information relating to our investigation into Kyle’s disappearance which can be found here.
“You can also contact Crimestoppers anonymously with details on 0800 555 111 or via crimestoppers-uk.org.”