Hundreds gather to bury 13 boys, killed in a fire at an Islamic school in Yangon, Myanmar, on Tuesday.<br/> <br />Officials said the fire was caused by a transformer that overheated in a dormitory where about 70 boys were sleeping.<br/> <br />Most managed to escape when fire officers broke open the double-locked doors to the building, but 13 were killed by smoke inhalation.<br/> <br />Neighbours and witnesses said the doors to the dormitory may have been locked for security reasons, after violence elsewhere in the country.<br/> <br />Burmese Muslims are on alert after 43 people died in a wave of Buddhist-led sectarian clashes, including the fire-bombing of mosques and homes.<br/> <br />Human Rights Watch has released before and after satellite images of towns that were damaged by fire during the clashes.<br/> <br />The rights group called upon the Burmese government to investigate the violence.<br/> <br />(SOUNDBITE) (English) HRW DEPUTY DIRECTOR OF ASIA PHIL ROBERTSON SAYING:<br/> <br />"The message needs to be sent very cl
