Six car bombings in four hours killed 48 people and wounded 81 in various Baghdad neighborhoods Wednesday, according to Iraq’s Interior Ministry. In a separate incident, five people were killed and three wounded by a roadside bomb south of Baghdad, a ministry official said. Most of the deaths came when three car bombs parked at separate but nearby marketplaces exploded in quick succession in the eastern Baghdad Shiite neighborhood of Sadr City, killing at least 45 people and injuring at least 68, the ministry official said.