Colombia military aircraft crashes with 125 aboard, many feared dead
The Hercules aircraft went down shortly after departure from Puerto Leguizamo, near the southern border with Ecuador, strewing burning wreckage on the jungle floor.
The troubled border area has been the scene of heavy military activity in recent weeks, as the Colombian and Ecuadoran militaries try to tackle drug-running cartels and militias.
The toll remained unclear.
Officials said that as many as 48 survivors had been found. A military source told AFP that 80 people may have been killed, although there was no official toll.