Scotland Yard has denied claims that scientists reviewing the murder of television presenter Jill Dando in south west London have found compelling new DNA evidence.
Detectives continue to review their inquiry into the fatal shooting of the Crimewatch presenter on the doorstep of her Fulham home in April 1999.
The re-examination was ordered after Barry George was acquitted of her murder following an Old Bailey retrial in 2008.
The Sun newspaper reported that police have found "conclusive" DNA evidence after material was passed to the forensic science service for analysis. It claimed advances in DNA technology have unearthed vital new clues with a 20% chance of matching the forensic breakthrough to a suspect.
However a source close to the inquiry said that, although the forensic review continues, there has been "no specific breakthrough at this time".
A Metropolitan Police spokesman declined to discuss specific details of the forensic tests.
Miss Dando, 37, was shot once in the head outside her home on April 26, 1999. Neighbours said a man in a dark blue overcoat had been hanging around before and after her killing.
The gunman shot her once in the head in a professional-style assassination after pushing her down towards the ground.
George, 50, was convicted of Miss Dando's murder at the Old Bailey in 2001 but the conviction was quashed on appeal in November 2007. He was cleared by a jury in August 2008 after a judge ruled out the firearms discharge evidence, but allowed jurors to hear about his stalking.
During an eight-week retrial they heard he was an oddball loner who was obsessed with celebrities and guns.