Helicopter belonging to Iran air force has crashed north of Tehran
Tehran - QNA
A helicopter belonging to Iran air force has crashed north of Tehran, killing all three crew members on board.
Iran's Fars news agency on Thursday quoted a district governor, Ezzatollah Khammohammadi, as saying that rescue teams have rushed to the crash site in the mountains north of the Iranian capital.
He said the cause of the crash is not immediately known and that an investigation is underway.