According to media sources, Federal Investigation Agency counterterrorism agents questioned Imran Khan on Saturday at the Attock Jail regarding the cipher issued by the Official Secrets Act.
Khan, 70, was sentenced by a court in a corruption case earlier this month and is now serving a three-year prison term.
Days after being charged under the Official Secrets Act for disclosing the contents of a private diplomatic cable from the nation's embassy in the US, the chairman of the Pakistan Tehreek-e-Insaf (PTI) is being questioned.
According to The Express Tribune newspaper, the FIA's counter-terrorism wing (CTW) started questioning the imprisoned former prime minister on Saturday on the "missing" cipher case by the Official Secrets Act.
The PTI leader was questioned by the FIA team regarding the locations of the missing cipher copy for more than an hour at the Attock Jail, where he is currently being held.
According to the story, which cited sources, the team arrived at Attock prison at about 2:15 p.m. and interrogated Khan there till 3:30 p.m. before leaving to return to Islamabad.
According to Samaa TV, the investigation agency has filed a case against Khan and Shah Mahmood Qureshi, the vice chairman of the PTI and a former foreign minister, after discovering their purposeful involvement in misusing the cipher and misplacing it.
On August 19, police detained Qureshi, a close friend of Khan's, from his home in this city. On Saturday, Khan was interrogated regarding Qureshi's allegations.
Khan has been accusing the US of planning a plot to overthrow his administration while citing the cipher. At a public demonstration, he had displayed the cipher to support his arguments. Such claims have been repeatedly refuted by the US, who calls them "categorically false."
An account of a discussion between Asad Majeed Khan, a former Pakistani diplomat, and Donald Lu, assistant secretary of state for the Bureau of South and central Asian Affairs, was included in the so-called cipher.
Following the publishing of a supposed copy of the secret cable by the US media site The Intercept, the former cricketer-turned-politician came under heightened scrutiny, with many in the previous government led by Shehbaz Sharif blaming the PTI leader for being the source of the leak.
