Indonesia is one of the most earthquake prone countries in the world. Along with Japan and the Philippines, they are among the countries most prone to earthquakes, as they all lie on the Pacific ring of fire. This is a geographic region where most of the world's volcanoes and major seismic fault are concentrated.
I read about this news and happened to come across another report. Flores was the site of a devastating earthquake and tsunami in 1992 that killed more than 2000 people.
https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ngdc.mgg.photos:45Earthquakes, tsunamis and natural disasters are really hard to fight against. As long as human keep destroying the environment for their own ambition, we will continue to face more disaster and increasingly serious consequences.