JAKARTA -- A helicopter with 13 military men on board crashed in Poso of Central Sulawesi province on Sunday, killing 12 soldiers and leaving one missing, Indonesian Armed Forces Spokesman Colonel Berlin G said.

"12 have been found, all of them dead. Another is still missing," the spokesman told Xinhua by phone.

The chopper went down at 17:55 pm local time when it was conducting a routine task, Colonel I Made Sutia, spokesman of the military command in the province said.