At least 103 people were killed and 150 others were missing after a 7.7-magnitude earthquake struck off Sumatra on Monday and triggered a tsunami, Indonesian officials said Tuesday.
The Pacific Tsunami Warning Center said the quake generated a "significant" tsunami.
Although communication with remote areas was difficult, witnesses in West Sumatra reported seeing a 6-meter (18-foot) high wave. One representative said at least one village with a population of about 200 people was swept away, with only 40 people recovered. Other reports described the tsunami as being about 3 meters (9 feet) high.
The Indonesian Ministry of Health previously had said more than 300 people were missing but later decreased that number.