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Via Reuters:
Saudi Arabia has arrested 431 people suspected of belonging to Islamic State cells and thwarted attacks on mosques, security forces and a diplomatic mission, the interior ministry said on Saturday.
The announcement came after a car bomb exploded at a checkpoint near the kingdom’s highest security prison on Thursday, killing the driver and wounding two security officials in an attack claimed by Islamic State.
A string of deadly attacks carried out by followers of the ultra-hardline militant group based in Iraq and Syria has fueled concerns about a growing threat of militancy in the world’s top oil exporter.