SAIPAN, Northern Marianas – A volcanic eruption near the Pacific's Northern Mariana Islands shot clouds of ash and vapor nearly eight miles into the sky, federal scientists said. The eruption occurred early Saturday and appeared to come from an underwater volcano off Sarigan, a sparsely inhabited island about 100 miles north of the U.S. commonwealth's main island of Saipan. The Northern Marianas are about 3,800 miles southwest of Hawaii. USGS volcanologist Game McGimsey said Sunday that scientists are still trying to pinpoint the source but evidence is pointing to an underwater mountain. "People on the island (Sarigan) heard a loud...