Two nearly simultaneous car bombs detonated in a Baghdad neighborhood Sunday, killing at least eight people, and officials said the death toll from a giant suicide truck blast that killed at least 115 in a village north of the capital a day earlier could be much higher. Sunday's twin explosions hit Baghdad's Karrada district, which has seen a relative calm for weeks amid a U.S. security crackdown in the capital and on regions to the north and south, the Associated Press reported.