Updated at 12:30 p.m. EDT, May 11, 2010 At least 154 Iraqis were killed and 620 more were wounded in a staggering series of attacks across the country. Some of the attacks likely were coordinated, such as those on checkpoints in Baghdad. Others seemed completely random. Security officials were quick to blame al-Qaeda or foreign nations, but the attacks crossed the sectarian lines, striking Shi’ite, Sunni and Kurd targets. In an unusual switch, the worst attacks occurred south of the capital in Hilla, Suwayra and Basra, where such attacks after tapered off. Conflicting casualty figures often follow such large and wide-ranging attacks.