A Colombian Air Force plane crashed shortly after takeoff in the south of the country, leaving at least 66 people dead and dozens injured, officials have said. Air force commander Carlos Fernando Silva Rueda said 114 army personnel were on board, as well as 11 crew. The plane, a US-made C-130 Hercules used for transporting troops, came down near the town of Puerto Leguízamo, in Putumayo province. Emergency workers sent to the area were seen searching through the wreckage for survivors. The cause of the crash was being investigated. Colombian Defence Minister Pedro Sánchez said the Lockheed Martin-built Hercules C-130 transport plane had suffered "a tragic accident while it was taking off from Puerto Leguízamo, transporting troops of our security forces". He described the incident near the border with Peru as "deeply sad for the country". Ammunition being carried on board detonated as a result of a fire on the aircraft, Sanchez later said.…