A small Falcon jet crashed in northwestern Iran on Monday, killing at least 13 people, Iranian state TV reported.
Among the dead, according to Israel Radio, were senior officers of the Iranian Revolutionary Guard, the commander of ground forces of the Iranian military, and both pilots.
The plane crashed near Oroumieh, 900 kilometers (560 miles) northwest of the capital, Tehran, the television said.
Iran has a history of aircraft accidents involving a heavy loss of life. The government has blamed the US trade embargo which makes it impossible for Iran to buy parts for its old US-built aircraft.