Investigators believe a group of U.S. soldiers suspected of raping an Iraqi woman, then killing her and three members of her family plotted the attack for nearly a week, a U.S. military official said Saturday. Up to five soldiers are being investigated in the March killings, the fifth pending case involving alleged slayings of Iraqi civilians by U.S. troops. The Americans entered the Sunni Arab’s family home, separated three males from the woman, raped her and burned her body using a flammable liquid in a cover-up attempt, a military official close to the investigation said. The three males were also slain. Full Story