Barry George has always denied he murdered Miss Dando |
A single particle of gunshot residue is at the centre of an appeal by the man found guilty of murdering BBC presenter Jill Dando, senior judges have heard.
It is the second attempt by Barry George, 47, to overturn his conviction.
His lawyer, William Clegg, told the Court of Appeal George's conviction was unsafe because fresh evidence "neutralised" the firearms evidence.
George is serving life for shooting Miss Dando dead outside her west London home in 1999.
If the appeal judges decide the conviction is unsafe, they could order a retrial.
