Mpumalanga Department of Community Safety, Security and Liaison spokesperson Moeti Mmusi says the crash occurred when a truck collided with the rear of a minibus taxi towing a trailer that was travelling in front of it.
The truck driver seemingly lost control, swerved into the oncoming lane, and collided with another minibus taxi travelling from the direction of Mbombela.
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Three of the deceased were occupants of the minibus taxi travelling from Mbombela. They were burned beyond recognition after the minibus caught fire on impact.
The fourth victim was found on the road, and it is not yet clear in which vehicle the person was travelling in. It is suspected he may have flung from one of the involved vehicles on impact.
No further injuries have been reported at this stage.
The truck was travelling from Johannesburg towards Mbombela. An investigation into the cause of the crash is underway.
