A Pakistani doctor who assisted the U.S. in tracking down Osama bin Laden has been convicted for high treason by a Pakistani court and sentenced to 33 years in prison, the Associated Press reports.

Shakil Afridi, a doctor from the Khyber tribal area, helped the U.S. Central Intelligence Agency collect DNA for a vaccination program, which eventually confirmed bin Laden's presence in Abbottabad. In May of 2011, U.S. Special Forces killed the terrorist leader in a night raid.

Additionally, Afridi must pay a $3,500 fine or face an additional three and a half years in prison. Secretary of State Hillary Clinton has called for his release.

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