They said violence erupted in several Shiite suburbs of the capital Manama, with police using tear gas and buckshot against protesters throwing petrol bombs.
Yesterday, police in Shiite-majority Bahrain again used tear gas against protesters demonstrating after the execution of Nimr al-Nimr, a driving force of protests in Saudi Arabia's east in 2011, who was among 47 people executed in the Sunni-ruled kingdom earlier in the day.