Official says 5 prisoners sought by the US in a swap with Iran have flown out of Tehran

An official has told The Associated Press that five prisoners sought by the US in a swap with Iran have flown out of Tehran on Monday.

The official spoke on condition of anonymity because the exchange was still in process.

Flight-tracking data analyzed by the AP showed a Qatar Airways flight take off at Tehran's Mehrabad International Airport, which has been used for exchanges in the past.

Iranian state media soon after said the flight had left Tehran.