A £5,000 reward is being offered in the hunt to catch the killers of Newbridge man Kyle Vaughan.
The money is being offered by Crimestoppers in a bid to shed new light on the investigation into Mr Vaughan’s disappearance.
Mr Vaughan, 24, was last seen on December 30 last year when his damaged silver Peugeot 306 was found on the A467 between Risca and Crosskeys.
Known to friends as ‘Jabbers’, the former Cwmcarn High School pupil is suspected to have been murdered.
Eight people have been arrested in connection with the investigation so far and are all due to answer police bail at the end of June.
A Crimestoppers spokesman said: “Kyle has been missing for a number of months now and police suspect he has been the victim of murder, which is why we are offering this reward.
“I am appealing to anyone with any information as to who many have committed this crime to contact Crimestoppers anonymously and tell us what you know, not who you are.”
Senior investigating officer Detective Superintendent Peter Jones said: “We remain fully committed to this investigation and our family liaison officers are continuing to support Kyle’s family through this incredibly difficult period in their lives.
“Although we have made arrests during the investigation, we still need people to offer us any information they may have. What may seem a small or insignificant detail could be a vital piece of the jigsaw we need to help the family understand how and why Kyle disappeared.
“We hope the £5,000 reward will encourage more people to come forward.
“Anyone with information can call Crimestoppers in complete confidence on 0800 555111 and any reward they are entitled to as a result of the information they provide can also be claimed anonymously.”
In March, Gwent Police revealed the extent of information it had looked at.
Detectives have collected hundreds of statements from people with more than 1,800 pieces of property analysed, including more than 180 mobile phone SIM cards.
Approximately 4,800 mobile phone contacts have been investigated and more than 10,000 lines of telecoms data, such as text messages, have been looked at.