A plane with 45 people believed to be aboard crashed Monday afternoon at the airport in Wau, South Sudan, officials said.
Charles said the weather in the region had not been good when the plane came into land.
A local official told BBC that the plan was coming from the country's capital, Juba, when it crashed.
The pilot couldn't control it, " said Stephen Youngule, Wau's Acting Airport Manager and Deputy Director of Air Traffic Services.
"It is an unfortunate incident. But when it touched the ground, it immediately burst into a huge flame", he said.
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He added, "I am telling militants fighting within the ranks of the enemies that you are only serving Israel, and shedding the blood of innocent people".
Wau State Information Minister Bona Gaudensio gave no casualty numbers but says the injured were rushed to the Wau hospital.
"We want to find out how many died", said Acho.
Photos taken by people at the airport showed the scorched wreckage of the plane in pieces as it was surrounded by emergency services, airport personnel and United Nations peacekeepers.
According to a report in the Independent, a South Sudanese newspaper carried photos showing the burnt-out ruins of the plane.