A roadside bomb went off near a police commando patrol in southern Baghdad on Wednesday, killing a commando member and wounding three others, a well-informed police source said.

"A roadside bomb detonated near a passing police commando patrol on the Jadriyah Bridge in the morning, damaging a police vehicle, killing a commando member and wounding three others," the source told Xinhua on condition of anonymity.

Violence shows no sign of abating despite a security clampdown, dubbed "Operation Imposing Law", launched by U.S. and Iraqi troops in Baghdad. Dozens of people were killed in a wave of bombings on Tuesday.

Source: Xinhua