An undersea earthquake of 7.4 magnitude toppled buildings in parts of northern Indonesia, sent people fleeing from their homes, killed at least one person and generated a small tsunami on Thursday.Waves up to 75 cm (30 inches) above normal tides were recorded at several monitoring stations about a half-hour after the earthquake, which was centred in the Molucca Sea.Indonesia’s meteorological agency lifted its tsunami warning hours after the quake, and the Philippine Institute of Volcanology and Seismology said there was no destructive threat to the country, which is north of the quake’s epicentre.Strong shaking lasting 10 to 20 seconds was felt in Bitung in North Sulawesi province as well as in Ternate city in neighbouring North Maluku province, according to Indonesia’s Disaster Management Agency.Initial assessments showed light to severe damage in parts of Ternate, including a church and two houses. In Bitung, damage assessments were still under way, the agency said.Indonesia’s Search and Rescue Agency reported that a 70-year-old woman died in a building collapse in North Sulawesi’s Manado city and another resident was injured. At least three injured people were hospitalised in Ternate.Videos released by the rescue agency showed damaged structures and flattened houses, while television stations broadcast scenes of people rushing outside and gathering in streets to avoid the risk of collapsing buildings.Nearly 50 aftershocks were felt in nearby areas.”We had just woken up and suddenly the earthquake hit… we all ran out of the house,” Bitung resident Marten Mandagi said. “The shaking was very strong.”Indonesia, a vast archipelago of more than 280 million people, sits on major seismic faults and is frequently hit by earthquakes and volcanic eruptions.