An Official news agency in the Saudi Kingdom, reported that “three assailants fired machine guns and pistols on a crowd leaving a building in the village of Al-Dalwa in the Al-Ihsa district of Eastern Province.”
The agency added that at least nine others were wounded, in the attack which took place when the mourners were commemorating the occasion of Ashura on the tenth night of Muharram.
Meanwhile, other sources put the toll at seven martyrs and 30 others injured.
The incident followed a wave of attacks against Shia mourners in the neighboring Iraq by Takfiri militants.