Riyadh: Four people were killed on Friday when a car blew up near a Shia mosque in Saudi Arabia's eastern city of Dammam, Saudi Press Agency (SPA) reported.
The attack targeted the worshippers at Friday prayers at Al Anood mosque in the Eastern Province, SPA reported citing a spokesman of the Saudi interior ministry was quoted as saying.
Police suspected a car at the parking lot of the mosque, which exploded when security forces walked towards it, killing four people, the spokesman added.
One of the dead is suspected by police to be the driver of the car.
A number of nearby cars caught fire following the blast, Xinhua news agency reported.
The incident came a week after a suicide bombing hit a Shia mosque in Al Qatif area in the Eastern Province, killing 21 worshipers and injuring 101 others.
Last week, the attack was claimed by the Islamic State (IS) Sunni radical group.