Updates toll, adds details (first version was posted at 14:36)
An Indonesian military helicopter crashed on Saturday, killing 13 passengers, local media reported.
The Russian-made helicopter was carrying seven military crew and 12 construction workers to the northern district of Malinau on the border with Malaysia where they had planned to build a patrol post, dpa reported.
Local news portal Tribunnews.com said six survivors, including four civilians, had been evacuated to hospitals in the area.
Indonesian military spokesman Iskandar Sitompul told dpa by phone that the helicopter lost power as it was landing.