On a crowded street in the Iraqi city of Karbala a blast killed at least 10 people and wounded 38 others , the official said . NEW : Car bomb kills four in Baghdad . Interior Ministry occur in Iranian cities of Karbala and Najaf . Many of the victims are Iranian pilgrims , an official said . And in Baghdad , a bomb wounds 5 people .
NEW : Car bomb kills four in Baghdad . Interior Ministry occur in Iranian cities of Karbala and Najaf . Many of the victims are Iranian pilgrims , an official said . And in Baghdad , a bomb wounds 5 people .