Former CIA operative Edwin P. Wilson, who was found guilty in 1983 of selling arms to Libya but released from prison in 2004 after a judge threw out the conviction, has died at age 84, a funeral home director said on Saturday.

When Wilson was sent to prison, his was the biggest arms-dealing case in US history.

Wilson died on Sept. 10 of complications from heart valve replacement surgery, said Craig Emmick, director at Columbia Funeral Home and Crematory in Seattle.

Following his release from prison, where Wilson had worked tirelessly to disprove allegations he was a traitor, he had spent recent years living in the Seattle suburb of Edmonds, said a statement from his family on the website of Columbia Funeral Home.

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