Saudi Arabia's security forces have arrested 172 "terror suspects" who were training as pilots to carry out suicide attacks in the kingdom, an interior ministry spokesman says.
General Mansur al-Turki told Al-Arabiya TV on Friday that the suspects include both Saudis and foreigners.
He said the targets of planned attacks included Saudi oil installations and military bases and that one cell planned to storm a prison and release the inmates.
The ministry, in a statement read on state television channel Al-Ekhbariyah, also said that police seized large amounts of money and weapons in the "anti-terror" raids.
Saudi Arabia has been battling al-Qaeda suspects since they launched a wave of bombings and shootings, many targeting Westerners, in the oil-rich kingdom in May 2003.