Iraqi police stand on guard at a bombing site in central Baghdad. Earlier on Tuesday, another suicide car bombing took place in a busy street in central Baghdad, killing at least seven people and wounding 16 others. (Xinhua/AFP Photo)

    BAGHDAD, May 10 (Xinhuanet) -- A suicide car bomb detonated at the river police headquarters in southern Baghdad on Tuesday, wounding a policeman, witnesses told Xinhua.

    The attack took place at around 11:15 a.m. (0715 GMT) when a suicide bomber blew up an explosive-laden vehicle outside the river police base on the bank of the Tigris river in Baghdad's southern Jadriyah district.

    "I saw a speedy vehicle dashing into the fence of the police headquarters and then a powerful explosion occurred, sending a plume of black smoke into the sky," said Salahudin Ibrahim, awitness.

    A policeman was wounded, he added.

    Earlier on Tuesday, another suicide car bombing took place in a busy street in central Baghdad, killing at least seven people and wounding 16 others.

    The blast destroyed several cars and rattled windows of nearby buildings. Enditem