RIYADH, July 8 (Xinhua) -- Two Saudi policemen were injured in a projectile attack in Saudi Arabia's Eastern province, interior ministry tweeted on Saturday.
The ministry confirmed that the two were referred to hospital for treatment.
The attack is the third one in line occurred in Qatif region of the province.
A policeman was killed and six others injured on Thursday in a similar attack, while another projectile attack killed a policeman and injured three on Tuesday.
Violence in Qatif witnessed escalation since the beginning of this year after the announcement of the construction plan to replace deserted houses, which were taken as hideouts by fugitives in Al Masoura neighborhood.
Qatif has been disturbed by violence for years, as the minority Shiite community in the conservative Sunni state is in demand for more rights.