magnitude aftershock that rocked the area just before dawn. The quake shook buildings and forced nearly 102,000 worried residents to stay inside shelters at local school gymnasiums and public halls, where many have lived since Saturday evening's 6.8-magnitude earthquake. The weekend quakes in rural Niigata, about 250 kilometers (160 miles) northwest of Tokyo, toppled houses, cracked roads and bridges, and derailed a high speed train. On Tuesday, five more people, mostly elderly, died from strokes or cerebral hemorrhages attributed to their ordeals. --SP 1452 Local Time 1152 GMT