Police investigating the murder of Jodi Jones have traced a man seen near the area where the teenager's body was found.
Police staged a reconstruction of Jodi's final movements
The man had been spotted on the night police staged a reconstruction of the 14-year-old's final movements.
One witness thought he had seen the same man walking behind Jodi on the night she died.
However, Lothian and Borders Police said this had been ruled out because the man who came forward had been in England at the time.
Detectives are now concentrating on tracing the man seen on the night of Jodi's murder.
The teenager's body was found on the Roman Dyke pathway on the outskirts of Dalkeith on 30 June.
She had set out to walk to her boyfriend's house, but the alarm was raised later when she failed to turn up there or return home.
On Wednesday police said two witnesses had come forward reporting to have seen a girl matching Jodi's description on the night of her death.
Both witnesses also saw a man walking closely behind the teenager, while one believed that he saw the same man on the night of the police reconstruction a week later.
Police said that the man spotted on 7 July had come forward as a result of the public appeal.
Detective Inspector Tom Martin said he had been working in England for a year and only returned home on the night he was seen.
"We are very pleased that the gentleman in one half of the appeal has come forward and is identified," he said.
"As soon as he heard the description and recognised himself he contacted police.
"He had in fact just got off the bus on the night of the police reconstruction and vehicle
DI Martin said police had verified that the man was not in Easthouses during the week of Jodi's murder.
Jodi's body was discovered on 30 June
"This means we are now focussing our attention on the week one sighting and
the man walking behind a girl fitting Jodi's description," he added.
"Both witnesses saw this man walking behind a girl in Easthouses Road near to the entrance of the Roman Dyke pathway at around 1700 BST."
He said it was "imperative" that police trace this man, who was believed to be about 20 years old.
He was said to be white, between 5ft7in and 5ft 10in tall, of stocky build with short, untidy light brown hair.
He may have been wearing a grey hooded sweat top and carrying a rucksack or