Police stand in front of a mosque and school dormitory that were damaged by a fire in Yangon April 2, 2013. [Photo/Agencies]

YANGON - A total of 13 children out of 78 were killed in a fire that broke out with a mosque school in Yangon's Botataung township early Tuesday, local authorities confirmed.

The fire, which occurred at 03:00 am when the children were asleep, was caused by electric short-circuit triggered by overheat of a voltage transformer installed inside the mosque, sources said.

The fire has been brought under control.