The military and hospital sources said at least six soldiers had been killed.
Some 700 have rejected the conditions and will not be set free, military sources said.
Military sources described those killed as men, between ages 20 and 60.
Military sources reported that more than 60 rebels were killed.
Military sources, however, said there was probably little left of the helicopter.
Military sources said at least 20 other soldiers and civilians had died.
A military source said the arms given up so far were primitive or in need of repair.
Shots were fired from a gun, another military source said.
Military sources said they would keep the pressure on the launching cells the coming days.
The 77 rebels, including seven area leaders, died in fighting Saturday, the military sources said.