Police are appealing for two people on BMX bikes who were seen close to the scene where missing Neath soldier Josh Thomas went missing during a night out in Rochester, to come forward.
Kent police say they could help provide information in the search for the teenager.
Officers say two males riding small BMX bikes along Corporation Street were seen on CCTV just minutes after Josh.
They are then seen riding along the High Street, heading back towards Rochester at just before 2am.
Josh was last seen in the early hours of last Wednesday morning.