A powerful undersea earthquake with a magnitude of 7.4 struck northern Indonesia on Thursday, toppling buildings, forcing residents to flee, killing at least one person and generating a small tsunami.

Waves of up to 75 centimeters (30 inches) above normal tides were recorded at several monitoring stations about 30 minutes after the quake, which had its epicenter in the Molucca Sea. Indonesia’s meteorological agency later lifted the tsunami warning, and the Philippine Institute of Volcanology and Seismology confirmed there was no destructive threat to the country, located north of the quake’s epicenter.

Strong shaking lasting 10 to 20 seconds was reported in Bitung in North Sulawesi province and in Ternate city in neighboring North Maluku province, according to Indonesia’s Disaster Management Agency.

Initial assessments indicated light to severe damage in parts of Ternate, including a church and two houses, while damage evaluations were still ongoing in Bitung.

Indonesia’s Search and Rescue Agency said a 70-year-old woman died when a building collapsed in Manado city, North Sulawesi, and another person was injured. At least three people were hospitalized in Ternate due to injuries.

Video footage released by the rescue agency showed damaged structures and flattened houses, while television coverage captured residents rushing outdoors and gathering in streets to avoid potential building collapses.

Nearly 50 aftershocks were reported in nearby areas following the main quake.

“We had just woken up and suddenly the earthquake hit… we all ran out of the house. The shaking was very strong,” said Bitung resident Marten Mandagi.

Indonesia, a vast archipelago of more than 280 million people, sits on major seismic fault lines and frequently experiences earthquakes and volcanic eruptions.