"The incident will be investigated, I am not sure but probably it might have been overloaded. Cause it just took off and immediately went down half a kilometer from the airport. This will be clear only after the investigation," he said.
The investigation will be comprehensive and will include all the interested parties, the minister added.
The plane went down close to South Sudan's capital of Juba, killing dozens of people both aboard and on the ground. Thirty-six bodies have been retrieved at the crash site, according to South Sudanese Transport Minister Hon Kuong Danhier Gatluak, while three people survived.