Islamabad, Jan. 30 -- A special court, established under the Official Secrets Act, on Tuesday sentenced former Pakistan prime minister Imran Khan and ex-foreign minister Shah Mahmood Qureshi to 10 years in jail in the cipher case.

The cipher case pertains to a diplomatic document, which the Federal Investigation Agency's chargesheet alleges that it was never returned by Imran.

The PTI has long held that the document contained a threat from the United States to oust Imran as prime minister.

The verdict came nine days before the February 8 general election, which the PTI is contesting amid a state crackdown and without an electoral symbol, according to Dawn.

Both Imran and Qureshi have been in jail in the run-up to the election. While Imr...