Fragments of DNA belonging to another person were discovered on the bag containing the body of the MI6 spy Gareth Williams, an inquest heard yesterday.
Mr Williams's naked and decomposing body was discovered in a padlocked holdall in the bath of his two-bedroom rented flat in Pimlico, central London, on August 23, 2010.
Police said they believe a third party may have been involved in his death, but the samples were too small to profile the suspect.
The inquest at Westminster Coroner's Court also heard that Mr Williams had 26 pairs of women's shoes and boots as part of a £20,000 (€24,500) designer collection.
However, giving evidence, the 31-year-old's best friend, Sian Lloyd Jones, rejected suggestions that he was a transvestite, insisting the clothing and footwear would have been intended as gifts.
Giving details of the police investigation, Detective Chief Inspector Jackie Sebire said analysis of the bag revealed fragments of another person's DNA on the lock and zip.
She added: "I have always been open-minded but it has been my opinion, formed very early on, that there was a third party involved in locking that padlock and placing Gareth in the bath."
Det Chief Insp Sebire also told the hearing there was no sign of any struggle by Mr Williams to get out of the holdall.
The inquest continues. (© Daily Telegraph, London)