Kampala, Uganda, Dhu-AlQa'dah 14, 1435, September 09, 2014, SPA -- A United Nations helicopter that crashed in South Sudan last month was shot down after a rebel commander alleged that U.N. aircraft were being used to transport government troops, AP quoted the mission in South Sudan as saying Tuesday. Three Russian crewmen were killed and another was wounded on Aug. 26 when the helicopter crashed near the disputed town of Bentiu in Unity state. Experts who concluded the first stage of the investigation had uncovered evidence indicating that the aircraft was shot down, the U.N. mission said in a statement. Despite the threats to shoot down U.N. aircraft by the rebel commander, Peter Gadet, it was still premature to say who shot down the Mi-8 cargo helicopter, the U.N. mission said. -- SPA 19:45 LOCAL TIME 16:45 GMT www.spa.gov.sa/w