Nine other people were wounded in the attack in Al-Dalwah town in Al-Ahsa district, a police spokesman was quoted as saying. A local online newspaper, http://www.hasanews.com/, reported that six people were killed and 12 were wounded, some seriously, in what it called a “terrorist attack” on the ceremonies in the village.
"As a group of citizens was leaving a building...three masked men opened fire at them with machine guns and pistols," the spokesman said, adding that the incident was under investigation.
It gave no further details.
Police were mobilized into the scene and closed off the area. There was no word on what happened to the attackers.
Videos purporting to show the aftermath of the attack posted to social media showed a body lying in a pool of blood outside a building, with people milling around calling for help. The authenticity of the videos could not immediately be confirmed.
One of the videos showed a man holding spent bullet casings at the bloodstained entrance to what appears to be a Shiite place of worship.
Al-Ahsa is one of the main centers of minority Shiite Muslims in the Kingdom.