Shakil Afridi, or Shakeel Afridi, is a Pakistani physician who helped the CIA run a fake hepatitis vaccine program in Abbottabad, Pakistan, to confirm Osama bin Laden's presence in the city by obtaining DNA samples. Details of his activities emerged during the Pakistani investigation of the deadly raid on bin Laden's residence. This account is disputed in a recent account of events which implies Afridi was implicated as a cover for the real CIA operative. Afridi was arrested at the Torkham border crossing while trying to flee the country days after the raid. On 23 May 2012, he was sentenced to 33 years' imprisonment for treason, initially believed to be in connection with the bin Laden raid, but later revealed to be due to alleged ties with a local Islamist warlord Mangal Bagh. Lawyers appealed against the verdict on 1 June 2012. On 29 August 2013, his sentence was overturned and a retrial ordered.