Emergency responders say least 20 children have been killed when their minibus collided with a truck northeast of South Africa’s capital, Pretoria.

Photos posted by the ER24 medical service on Twitter present the minibus smoking and twisted on its facet subsequent to the truck.

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ER24 says responders discovered about 13 children trapped contained in the automobile after its flames had been put out. The opposite children had been discovered exterior the automobile.

The emergency service says the reason for the crash shouldn’t be but identified. It occurred between the communities of Verena and Bronkhorstpruit.