<p><br /> At least six people have been killed and 35 wounded in two separate attacks in Baghdad.<br /> </p><p><br /> In the first of the two attacks, three policemen and one civilian were killed when a parked car bomb exploded near a bus station in Baghdad's southern Bayaa neighbourhood.<br /> </p><p><br /> A second bomb targeting police and rescue services arriving at the blast site detonated minutes later.<br /> </p><p><br /> In the Sheikh Omar neighbourhood in eastern Baghdad, two bombs near a bus station went off simultaneously, killing two civilians and wounding 12 others.<br /> </p><p><br /> In a separate development, a senior Iraqi military intelligence official said that authorities had opened an investigation into an incident on the previous day when an Iraqi soldier opened fire on a group of American troops.<br /> </p><p><br /> The US soldiers had been protecting one of their commanders during a visit to an Iraqi army base about 130 miles north of Baghdad.<br /> </p><p><br /> Two American soldiers were killed, the first US servicemen to die since President Barack Obama declared an end to combat operations in Iraq last week.<br /> </p>
