TONGO, Congo (AP) — Tutsi-led rebels tightened their hold on newly seized swaths of eastern Congo Saturday, forcing tens of thousands of frightened, rain-soaked civilians out of makeshift refugee camps and stopping some from fleeing to government-held territory. Aid organizations said they were increasingly worried about a lack of food and shelter. European officials offered sympathy but no concrete promise of military reinforcements for the Congolese troops and U.N. peacekeepers routed by rebel forces in the sudden and dramatic escalation of eastern Congo’s civil war in the past week.—-Contact The Daily Reveille’s news staff at [email protected]