Rescue workers in Colombia are searching for four people who are missing after a military plane crashed in the south of the country. Sixty-six members of the Colombian security forces were killed on Monday, when the Hercules C-130 transport plane came down shortly after take-off near Colombia's border with Peru. Locals were first to the scene, pulling out dozens of injured survivors from the burning wreckage and ferrying them to hospitals on the back of their motorbikes. An investigation is