AP - Investigators pressed ahead Saturday with their search for Virginia Tech shooter Seung-Hui Cho's motives, even as more of his victims' families prepared for memorial services. Authorities sought Cho's cell phone records on the chance he warned someone about what would become the nation's worst mass shooting in modern history.

AP - A wall U.S. troops are building around a Sunni enclave in Baghdad came under increasing criticism on Saturday, with residents calling it "collective punishment" and a local leader saying construction began without the neighborhood council's approval.

AP - The Pentagon is laying the groundwork to extend the U.S. troop buildup in Iraq. At the same time, the administration is warning Iraqi leaders that the boost in forces could be reversed if political reconciliation is not evident by summer.