According to official estimates in India, 10,749 people were killed, 5,640 people were missing and thousands of people became homeless when a tsunami triggered by the 2004 Indian Ocean earthquake near the Indonesian island of Sumatra struck the southern coast on 26 December 2004. The earthquake registered 9.1–9.3 Mw and was the largest in five decades. It was followed by strong aftershocks on the Andaman and Nicobar Islands. The death toll of the earthquake was 1,500 people.