Saudi to try Iranian accused of spying: Reports

RIYADH (AFP) - Four Iranians including an alleged spy will stand trial in Saudi Arabia, local media reported on Friday as a diplomatic crisis festers between the regional rivals.

The Arab News daily reported that the three were alleged "terrorists", but gave no details of the accusations and the Iranians were not identified.

The Saudi Gazette said they were arrested in 2013 and 2014.

The reports come after tensions escalated between Sunni powerhouse Saudi Arabia and its Shiite rival Iran.

Riyadh severed diplomatic ties and air links with Teheran after crowds set fire to its embassy in the Iranian capital and its consulate in second city Mashhad last weekend.

The protests were in response to Riyadh's execution of Shiite cleric Nimr al-Nimr, a driving force behind demonstrations in 2011 by the kingdom's Shiite minority, which has complained of marginalisation.