Metropolitan Police / AFP - Getty Images

This handout picture received from the Metropolitan Police on Wednesday shows late British intelligence analyst Gareth Williams.

LONDON -- A British spy, whose naked, decomposing body was found padlocked in a bag in his bathtub, probably died accidentally on his own, police said on Wednesday, rejecting conspiracy theories that his bizarre death was the work of foreign agents.

In May last year, a coroner concluded that Gareth Williams, who was working for Britain's external intelligence service MI6 when he was found dead at his home in August 2010, was probably killed unlawfully by another person.

His spy background and the fact that expensive, unworn women's clothes were found at his flat provoked a wide range of "weird and wonderful" theories, London Police Deputy Assistant Commissioner Martin Hewitt said, but further investigations now suggested it was more likely he had not been murdered.

"Most probably, it was an accident," Hewitt told reporters. "I'm convinced that Gareth's death was in no way linked to his work."

Williams, 31, worked as a code breaker at the Government Communications Headquarters but was on a three-year secondment to MI6, which deals with foreign espionage matters.

http://worldnews.nbcnews.com/_news/2013/11/13/21438866-british-spy-found-padlocked-in-bag-in-bathtub-died-accidentally-police-say