The MI6 spy who was found dead zipped up in a holdall bag in 2010, had shortly before his death hacked into the Clinton’s email account and obtained secret information on Bill Clinton, it has emerged.
Shortly before his suspicious death, which remains unsolved to this day, Gareth Williams had found out highly sensitive information on the Clinton’s as a result of his hacking.
The Sun on Sunday can reveal that voicemail messages Mr Williams left for family and pals were deleted in the days after his death. And a rival agent may also have broken into the flat to destroy or remove evidence.
The inquest was barred from discussing Mr Williams’s work in public. But sources say he was helping on the joint monitoring network Echelon, which uses sophisticated programs to eavesdrop on terrorists and criminal gangs, particularly those in Russia.
Echelon is used by Britain, the US, Canada, Australia and New Zealand.
A source said: “The Clinton diary hack came at a time when Williams’s work with America was of the most sensitive nature.
“It was a diplomatic nightmare for Sir John Sawers, the new director of MI6 at the time.”
Insiders claim Mr Williams, who had been given a second passport with a fresh identity, was also getting fed up with living a secret life. He is said to have loathed his spy training after having his wrist broken during one hardcore session.
One insider said: “Williams’s state of mind in the months before his death was worrying those closest to him.
“He found the training so stressful and his mood blackened even talking about it.
“Typically he’d be asked to learn a new identity then report to a country hotel to meet an interrogation team. There he would be grilled about his new ID for 48 hours without sleep.
“His wrist was broken once after he was handcuffed to a metal bar inside a van that was driven around the country for several hours while he faced a barrage of questions.”
His sister Ceri Subbe also told the inquest he did not enjoy the “flash car competition and post-work drinking culture” of MI6.
He had applied to return to GCHQ, in Cheltenham, but bosses were slow in approving this.
Mr Williams, a keen cyclist originally from Anglesey, North Wales, died shortly after returning from a hacking conference in America.
He had been to see a drag queen show by himself two days before he was last seen alive, on August 15, 2010.
Eight days later his naked body was found folded into the 32in by 19in bag placed in the bath of his flat in Pimlico, central London.
His mobile phone and sim cards were laid out on a table. The last computer evidence of him being alive showed him looking at a cycling website.
Detectives are still baffled as to how the maths genius and expert cryptographer died.