JAKARTA 28 December 2018: Indonesia on Thursday raised the alert level for the erupting Anak Krakatau volcano to the second-highest, and ordered all flights to steer clear, days after it triggered a tsunami that killed at least 430 people, Reuters has reported.
A crater collapse on the volcanic island at high tide on Saturday sent waves up to 5 metres (16 feet) high smashing into the coast on the Sunda Strait, between the islands of Java and Sumatra.
Authorities have warned that the crater of Anak Krakatau, or child of Krakatau, remains fragile, raising fears of another collapse and tsunami, and have urged residents to stay away from the coast, said Wam.
The volcano has been rumbling on and off since July but has been particularly active since Sunday, spewing lava and rocks, and sending huge clouds of ash up to 3,000 metres into heavily overcast skies.
The national geological agency, in raising the alert level to the second-highest, set a 5-km exclusion zone around the island.