A powerful earthquake hit Central Sulawesi, causing structural damage and prompting evacuations in the city of Palu.

A 6.7-magnitude earthquake shook part of central Indonesia’s Sulawesi island on Tuesday, causing scattered damage and rattling residents of a city devastated by a quake and tsunami eight years ago. The strong shaking sent people fleeing into open areas in and around Palu, a city of about 400,000 people and the capital of Central Sulawesi province. Several hospitals evacuated patients, some with IV drips, outdoors as a safety measure. Images from the area showed heavily damaged structures with...