JOHANNESBURG (AP) — A South African official says 23 people have died after a bus headed to Cape Town overturned on a highway.

Department of Community Safety spokesman Xenophone Wentzel told the South African Press Association that four children were among the victims.

The driver of the bus was seriously injured but survived the early Wednesday crash.

Wentzel says the bus involved was not roadworthy and had been suspended by the Eastern Cape traffic department.

Road accidents are common in South Africa, often the result of speeding drivers and vehicles in bad repair.

The country is preparing to host the World Cup, which begins next month. Hundreds of thousands of foreign tourists are expected to attend.