Imad al Haraki, who worked for the Syrian consulate in Saudi Arabia, said the Syrian government had selected him to carry out the act on the ninth day of Haj, when 3 million people gathered at the Arafat Mount during rituals.
He said the former deputy general consul, Shawqi Shamat, gave the orders to him.
Gulf News said al Haraki decided to tell Saudi authorities about the plot, and three diplomats in the consulate were deported as a result.
Al Haraki said he then asked Saudi authorities for protection, as he had heard he had been sentenced to death.
Celebrity Couples of 2014 [PHOTOS]