The MI6 spy who was found dead inside a padlocked bag in his bathtub in 2010 had illegally hacked into secret data about former U.S. President Bill Clinton, according to The Sun newspaper.
Gareth Williams, 31, was discovered inside a bag at a Security Service safe house in London in 2010, just a few minutes away from Britain's House of Parliament.
Citing an intelligence source, The Sun claims that Williams, a math genius and expert cryptographer, had "dug out the guest list for an event the former American president was going to as a favor for a pal."
The supposed transatlantic hack violated Williams' security clearance and angered MI6 bosses as tensions escalated with U.S. security services, according to the Daily Mail.
"The Clinton diary hack came at a time when Williams' work with America was of the most sensitive nature," the source told the newspaper. "It was a diplomatic nightmare for Sir John Sawers, the new director of MI6 at the time."
The Sun said it has reason to believe that voicemail messages Williams left for family were deleted shortly after his death and that a rival agent broke into his home to destroy or remove evidence.
A number of theories exist as to Williams' true cause of death, including that he was killed by fellow or foreign agents, had suffocated when a sex game went wrong, was murdered by an ex-lover or by a "Kremlin car" driving past his house.
A coroner previously determined that Williams' death was "unnatural and likely to have been criminally mediated." Williams reportedly had a few sexual fetishes, but the coroner said there was no evidence to suggest they had anything to do with his death. Nonetheless, a year later, following a three-year investigation, the Metropolitan Police somewhat suspiciously ruled he had accidentally locked himself inside the duffle bag, possibly as part of a sex game, and no one else was involved, according to Breitbart.
Since then, even the U.S. Federal Bureau of Investigation has looked into Williams' death, which remains one of Britain's greatest unsolved mysteries.
