At least 272 people died in a tsunami caused by an earthquake close to coasts of Sumatra and in the eruption of a volcano in Java island in Indonesia, local authorities report.

The 7.7 magnitude quake hit 78 km west of South Pagai in the Mentawai islands late on Monday. According to the local authorities, the quake and three meters high waves, flooded area around 600 meters from the coast, destroying most buildings in the coastal villages in Sumatra and Mentawai and killing 154 people.

According to the Center For Natural Disaster Reduction for Western Sumatra data, more than 400 people are missing, AP repots.

The 7.7-magnitude quake that struck late Monday just 13 miles (20 kilometers) beneath the ocean floor was followed by at least 14 aftershocks, the largest measuring 6.2

The quake struck on Monday mere 20 kilometers beneath the ocean floor, and was followed by at least 14 aftershocks the largest measuring 6.2 Richter scale.

Navy boats with medicals and food supplies and rescuers in helicopters are heading toward the western Indonesian islands, to aid the tormented inhabitants.

The eruption of Inodnesia’s most volatile volcano, mountain Merapi (Fire mountain), approximately 1,300 east from Pagai, started on Tuesday and at least 28 people died.

According to Center of Volcanology and Disaster Management, the situation is calmer on Wednesday, but due to large amounts of accumulated energy, it is not possible to say what’s going to happen nest.

The two events were not related, but they both happened in the so-called Pacific Ring of Fire, a region prone to earthquakes and volcanic activity.