Jakarta, Indonesia — A strong undersea earthquake shook western Indonesia on Monday morning. But there were no immediate reports of serious damage or casualties.
The magnitude-6.0 quake was centered 48 kilometers (30 mi) southeast of Singkil, a coastal area in Aceh province at a depth of 48 kilometers (30 mi), the U.S. Geological Survey said.
No tsunami alert has been issued by Indonesia’s Bureau of Meteorology, Climatology and Geophysics.
A sprawling archipelago of more than 270 million people, Indonesia is frequently affected by earthquakes and volcanic eruptions due to its location on the Ring of Fire, an arc of volcanoes and fault lines in the Pacific basin.
A magnitude 5.6 earthquake on Nov. 21 killed at least 331 people and injured nearly 600 in the West Java town of Cianjur. It was the deadliest in Indonesia since a 2018 earthquake and tsunami in Sulawesi killed about 4,340 people.
In 2004, an extremely powerful earthquake in the Indian Ocean triggered a tsunami that killed more than 230,000 people in a dozen countries, most of them in the Indonesian province of Aceh.