Mt Krakatau in Sunda Strait placed in "on-guard" status

The volcano had produced 20 tremors and released 80-meter to 200-meter-long white-grey smoke plumes every hour over the past three days (Oct 24-26), Sigin, an officer assigned to keep a watch, said on Friday.

In a normal state, the volcano produced only five tremors per hour but since last Wednesday the frequency of tremors had increased, he said. Consequently, tourists and fishermen had been warned not to come near the volcano.