At least three people have been killed in a mosque attack in Saudi Arabia's eastern governate of al-Ahsa on Friday, Al Arabiya News Channel reported. A suspect in the attack has been reportedly arrested, sources said. At least seven people were injured in Friday's attack. An activist, citing witnesses, told Reuters earlier that an explosion was followed by gun attack on Imam Rida Mosque. Residents said security forces were exchanging gunfire with five suspects. Eastern regions of Saudi Arabia have been on alert after ISIS claimed two attacks Shia mosques last year. In August, a suicide bomber killed at least 15 people in an attack on a mosque used by members of a local security force in southwest Saudi Arabia. In May, a suicide bomber blew himself up during Friday prayers at a mosque in the village of al-Qadeeh in eastern Saudi Arabia, killing at least 21 and wounding 81 others.
