A man is appealing for information about his missing son on what would have been his 34th birthday.
Kyle Vaughan was 24 when he disappeared in Newbridge, Gwent, on 30 December 2012.
Mystery surrounds his whereabouts after his wrecked car is found abandoned on a country road, prompting detectives to launch a murder investigation.
Mr Vaughan’s father Alan Vaughan appealed for information on what would have been his son’s 34th birthday.
“We never gave up hope of locating Kyle. We never gave up hope of finding out what happened to him,” he said.
Mr Vaughan’s mother Mary died in 2018 after having advanced liver cancer for several years.
The factory worker, known to his friends as Jabbers, was last seen at his home in Newbridge.
Later that evening, his damaged silver Peugeot 306 was found on the A467 between Risca and Crosskeys.
It was not clear whether Mr Vaughan had been driving the vehicle, but police said they were confident he could have walked away from the collision.
A total of eight people were arrested on suspicion of offenses in relation to Mr Vaughan’s disappearance, but all were released without charge.
Detective Superintendent Nick Wilkie, of Gwent Police, said: “More than nine years later, our investigation into what happened to Kyle remains very active and we are in regular contact with his family.
“Officers from our Major Incident Team continue to investigate any information we receive from members of the public.
“This investigation is extensive.
“So far we have searched 40 areas, interviewed more than 200 people, sent more than 180 intelligence records and almost 900 witness statements.
“Unfortunately, we still don’t have the answers we need and Kyle’s family desperately wants them.
“We are still keen to receive any information that may assist our enquiries, however minor you may consider it to be.”