South African President Cyril Ramaphosa is expected to visit the sites of devastating floods that have left at least 78 people dead in the southeast of the country.

The number of people who have died in floods in South Africa’s Eastern Cape province has risen to 57 and includes several school children, who drowned when the minibus taxi they were traveling in was swamped.

The death toll included six high school students who were washed away when their school bus was caught in floodwaters on Tuesday near a river close to the town of Mthatha, which was especially