Several senior ministers as well as dozens of former ministers, have been detained in a campaign to stamp out corruption. Crown Prince Mohammed bin salman, whos in charge of the new Anti Corruption committee, appears to have sidelined powerful rivals. It seems the heads of the Saudi National guard and navy have been replaced. Staying in saudi arabia, state media there says the military has shot down a missile over the capital, riyadh. Officials believe the weapon was fired from yemen, where Houthi Rebels backed by iran are fighting the saudi backed government. Mohamed taha from bbc arabic says its clear the houthis intended to cause major damage. And in a further development in the region, iran has rejected accusations by the lebanese Prime Minister that its spreading violence across the middle east. Saad hariri resigned from his post unexpectedly, saying he feared for his life. Iranian Officials Say his resignation is a saudi plot to create tension. Martin patience reports from beirut