EDITORS PLEASE NOTE: EDIT CONTAINS MATERIAL THAT WAS ORIGINALLY 14:9<br/> <br />Indonesia's Mount Sinabung spewed volcanic ash reaching a height of eight kilometres on Monday (November 18), forcing more residents to flee.<br/> <br />Authorities said they predict the frequency of volcanic tremors to increase.<br/> <br />The National Disaster Management Agency said the number of residents who have left their homes stands at 6,155, spread across 16 different evacuation centres. No casualties have been reported.<br/> <br />The Center for Volcanology and Geological Hazard Mitigation has put the volcano's status on alert level three, recommending people not to approach the volcano within a radius of three kilometres from the crater.<br/> <br />The volcano had been inactive for four centuries before first erupting in August 2010.<br/> <br />Sinabung is one of nearly 130 active volcanoes in the world's fourth-most populated country, which straddles the "Pacific Ring of Fire".
