BOGOTA, Feb. 9 (Xinhua) -- A military cargo plane crashed in southern Colombia Saturday, killing all six soldiers on board, the military said.

    The accident occurred at 9:00 a.m. (1400 GMT) when the aircraft was flying in bad weather en route from Florencia, capital of Caqueta province, to San Vicente del Caguan.

    A helicopter sent by the military spotted the wreckage of the plane in mountainous areas in Montanitas, but rescuers were unable to carry back the bodies of the victims due to bad weather and difficult terrain.

    The military said it would launch an investigation into the cause of the crash.