Police in Kent searching for a missing Carlisle soldier say they have traced a car which approached the teenager.
Police say he was seen on CCTV walking on Rochester bridge just before 1am when a black hatchback car was seen to have stopped and engage in conversation with him.
Police say the driver of that car has now come forward and provided officers with information.
Josh Thomas, 18, disappeared last Wednesday after a night out drinking with friends. He had been celebrating passing his exams.
"We are thankful for the media coverage in helping trace the driver of the black hatchback car seen on CCTV stopping on the bridge.
"That person has been helping us with our enquires."
More top news
The driver of a Rangers supporters' bus which crashed on a roundabout killing a fan blamed the brakes when he was interviewed by police.
Sandy Murray, of Police Scotland, was was giving evidence at the trial of a bus driver who denies killing Ryan Baird by dangerous driving.
34-year-old Christopher Peck was involved in a head-on crash with a drunk driver. His funeral has taken place in his hometown, Workington.