UPDATE 1-Saudi security forces kill some people in flashpoint Shi'ite area - TV

Saudi security forces have killed some people during an operation in the predominantly Shi'ite eastern Al-Qatif region, Al-Hadath TV tweeted on Saturday.

The oil-producing province is a regular flashpoint between the Sunni-dominated government and minority Shi'ites who complain of discrimination and marginalization. Saudi authorities deny mistreatment.

The operation occurred on Tarout island, just off the city of Qatif, said the Saudi-owned TV station, giving no further details. Saudi security services regularly carry out operations in the area, with fatalities reported during operations in January and September, according to Saudi media. (Reporting by Maher Chmaytelli; Editing by Andrew Cawthorne)