Islamic State behind attack on Saudi security north of Riyadh: Arabiya TV

The assailants who attacked a state security building northwest of Riyadh on Sunday are Saudi militants who belong to Islamic State, Saudi-owned Arabiya TV said in a tweet, citing its own correspondent.Saudi state media said authorities thwarted the attack by four militants targeting the Mabaheth (domestic intelligence) station in Zulfi, a small city about 250 km (155 miles) northwest of the capital Riyadh.There has been no Islamic State claim of responsibility for the attack so far, and the aut