Security authorities foiled a fourth assassination attempt on Prince Muhammad Bin Naif Bin Abdul Aziz, Assistant Minister of Interior for Security Affairs, late last year, security sources disclosed to Okaz/Saudi Gazette Sunday. Prince Muhammad had earlier survived three assassination attempts – one of which coincided with this day in Ramadan last year and took at his palace in Jeddah when a terrorist, Abdullah Asiri, detonated an explosive capsule inside his body. The blast killed Asiri and slightly injured Prince Muhammad. Two Al-Qaeda terrorists, Yusuf Al-Shehri and Raed Al-Harbi, who were armed with explosive belts, were involved in the fourth attempt, which was to have taken place several months after the attempt at the palace, Okaz/Saudi Gazette has learned. The terrorists were confronted by security men at Hamra Al-Darb checkpoint, located in the southwest part of the Kingdom, and killed in a shootout at the scene. __