Jakarta. A tsunami killed at least 281 people and injured more than a thousand on the islands of Java and Sumatra following an underwater landslide believed to have been caused by an eruption of the Anak Krakatau volcano, officials said.

Indonesia sits on the geologically active Pacific Ring of Fire and is regularly hit by earthquakes. Here are some of the major quakes and tsunamis that have struck the country in recent years:

2004: A massive magnitude-9.1 quake on the western coast of Aceh Province in northern Sumatra on Dec. 26 triggered a tsunami that struck 14 countries, killing 226,000 people along the Indian Ocean coastline, more than half of them in Aceh.

2005: A series of strong quakes hit the western coast of Sumatra in late March and early April. Hundreds died on Nias Island, off the coast of Sumatra.

2006: A shallow quake rocked the area around Yogyakarta, killing at least 5,500 and destroying or damaging 150,000 homes.

2006: A magnitude-6.8 quake hit south of Java, Indonesia's most populated island, triggering a tsunami that smashed into the southern coast, killing nearly 700 people.

2009: A magnitude-7.6 quake struck near Padang, West Sumatra, killing more than 1,100 people.

2010: A magnitude-7.5 quake hit one of the Mentawai Islands off Sumatra, triggering a 10-meter tsunami that destroyed dozens of villages and killed around 300 people.

2016: A shallow quake hit Pidie Jaya district in Aceh, causing destruction and panic as people were reminded of the devastation caused by the deadly 2004 quake and tsunami. No tsunami was triggered, but more than 100 were killed by falling debris.

2018: Major quakes hit the tourist island of Lombok in West Nusa Tenggara, killing more than 500 people, mostly on the northern side of the island.

2018: More than 2,000 people were killed by a powerful earthquake and tsunami that hit Palu and Donggala in Central Sulawesi.

Reuters