The 16-year-old was stabbed more than 40 times
A man whose name was written on a cardboard sign which claimed he was the killer of a Kent schoolgirl 17 years ago has been traced by police.
Claire Tiltman, 16, was murdered in an alleyway in Greenhithe on 18 January 1993, while on her way to see a friend.
The cardboard sign was found next to a plaque in memory of the teenager.
Officers said the man was "fully co-operating" with inquiries into the knife attack, but no arrests had been made.
Cold case detectives retrieved the piece of cardboard last month after it was left near where Claire was stabbed.
It was found on 3 February by a local reporter and claimed to name her murderer, the type of car he drove and the firm he worked for.
It is understood the name mentioned was not one that had previously figured in police inquiries.
Kent Police said the sign was undergoing forensic examination.
The sign which 'named' the killer was found at a memorial site.
A spokesman said: "As with all ongoing investigations, officers will investigate any credible leads."
Claire, who was a pupil at Dartford Grammar School for Girls, was stabbed more than 40 times in the alleyway off London Road as she took a shortcut to visit friends four days after her 16th birthday.
No one has been charged with her murder.
Speaking on Friday, Claire's father Cliff Tiltman, 60, said he had heard nothing more from the police regarding the latest development.
"I don't want to get my hopes up," he said.
"I've done this before over the years, thinking that this looks promising, only for it to lead nowhere."