Story highlights The suicide bombing and gun attack injured seven others, the Saudi Press Agency says

It says the attack happened outside the Imam Ridha mosque in Saudi Arabia's eastern al-Ahsa region

(CNN) A suicide bomber blew himself up and another attacker opened fire outside a Shiite mosque in the predominantly Sunni kingdom of Saudi Arabia on Friday, killing two people and injuring at least seven others, the state-run Saudi Press Agency reported.

Security forces confronted both attackers as they headed toward the Imam Ridha mosque in the town of Mahasen, in eastern Saudi Arabia's al-Ahsa region in Eastern Province, where worshippers were holding Friday prayers, the press agency reported.

The bomber blew himself up as security personnel engaged him, and the other attacker exchanged fire with security forces, according to the Saudi Press Agency.

The gunman was arrested and was wearing a vest with explosives, the agency reported.

Pictures of the scene posted to social media showed several bodies on the ground.

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