A number of security patrols performing duties at Al-Shwikah district in Qatif Province came under heavy fire from masked men on Thursday 17/3/1433H which resulted in the injury of 4 rioters where one of them died before reaching King Fahd Medical Complex, the media spokesman of Eastern Region police said. He added that the security men will deal firmly with all cases and situations that endanger the security and safety of citizens and residents.