At least one person was killed and two policemen sustained injuries when some unknown persons opened indiscriminate firing on Siryab road here on Monday. According to media report, unknown persons fired upon Quaid Abad police station personnel. Near to Balochistan University, causing injuries to both police men and one on duty security guard. Injured were sent to civil hospital Quetta. Security guard succumbed to injuries and died in the hospital. Balochistan Chief Minister Nawab Aslam Raisani condemned the incident and ordered to arrest the perpetrators soon as possible.