Indonesia today raised the danger level for Anak Krakatoa volcano that triggered a tsunami killing nearly 430 people last weekend. The authorities have also widened a no-go zone around the volcano to five kilometres, up from a previous two kilometres. Aviation officials have ordered flights to be redirected away from the area. <br />'' <br />''Earlier, the authorities had issued warning that fresh activity at the crater threatened to trigger another deadly wave. People have been asked to stay away from the coast. <br />''<br />''<span style="color: #222222;">Nearly 1,500 people were injured and over 21,000 people have evacuated to higher ground. At least 159 people are still missing. A state of emergency has been declared until January 4, which authorities hope will make it easier to deploy assistance. </span><br />