A passenger bus travelling to Zimbabwe with nationals of Malawi and Zimbabwe on board, were killed when the bus rolled down an embankment in South Africa, a provincial transport minister said Monday.

Province transport Minister Violet reveals at least 40 dead in the bus collision in Limpopo, South Africa. The bus crashed around 90 kilometers (55 miles) from the border on Sunday after the driver apparently lost control

“They are still working on the scene, but 40 bodies have already been confirmed to date,” Mathye told the Newzroom Afrika channel. The dead included a 10-month-old girl, she said.

Thirty-eight people were in hospital and rescuers were searching for other victims, she told eNCA media.

The bus was travelling from the southern city of Gqeberha, around 1,500 kilometres away, and its passengers included Malawians and Zimbabweans who were working in South Africa. The crash may have been caused by driver fatigue or a mechanical fault, the minister said.

South Africa has a sophisticated and busy road network with a high rate of road deaths, blamed mostly on speeding, reckless driving and unroadworthy vehicles.