Disaster-hit Indonesia could be at risk of more tsunamis and the lack of an early warning system leaves the already vulnerable country at the mercy of further danger.
The death toll has reached 222 with 843 injured and as emergency services scramble to help while people search for their families in the rubble, they are still in danger as Anak Krakatau continues to erupt.
Speaking at a news conference on the island of Java, National Disaster Management Agency spokesman Sutopo Purwo Nugroho warned that the risk of more tsunamis wasn't over.
He said: 'Recommendations from Meteorology, Climatology and Geophysical Agency (BMKG) are that people should not carry out activities on the beach and stay away from the coast for a while.
'The potential for a fresh tsunami is still possible because the volcanic eruption of Anak Krakatau continues to occur, potentially triggering tsunami.'
The revelation is made all the more shocking considering the country's devastation after the 2004 Indian Ocean earthquake occurred, killing 227,898.
Today's tsunami was triggered by volcanic activity but the government warned that the country did not have any early warning system for tsunamis not caused by earthquakes.
A government spokesman said the tsunami was likely to have been caused by an underwater landslide caused by volcanic activity of Mount Anak Krakatau, combined with an unusually high tidal wave because of the full moon.
National Disaster Mitigation Agency (BNPB) spokesman Sutopo Purwo Nugroho said: 'According to preliminary data, there are no foreign casualties, only Indonesians.'
Fault sirens on the existing panic system caused residents of Labuhan Bay of Pandeglang regency, Banten, to flee to higher ground.
It is not known exactly why the sirens did sound but the BMKG [Meterology, Climatology and Geophysics Agency] say they did not issue the warning.
'It is likely that a technical problem caused the sirens to sound on their own', a spokesman said.
Volcanic tsunami in Indonesia: New pictures and videos of the tsunami triggered by the eruptive activity of Anak Krakatau volcano
A frantic search was underway on Sunday for survivors of a tsunami in Indonesia’s Sunda Strait that struck without warning on the country’s two most-populous islands, killing at least 222 people, injuring more than 800 others and destroying hundred of buildings.
Officials said they think that the tsunami — with a wave nearly 10 feet high that hit the coast — had been caused by an undersea landslide that was set off by volcanic activity on the island of Anak Krakatau.