New Delhi, Jan. 20 -- A truck and a school minibus were in collision in South Africa's Gauteng province Monday, killing at least 13 children, authorities said.

Preliminary reports indicated at least 11 schoolchildren died at the scene, with two others succumbing to their injuries in the hospital.

The private vehicle was transporting students to various primary schools and high schools in the southwest of Johannesburg on Monday when the incident occurred around 7 a.m., according to authorities.

Witnesses said the minibus carrying the children was overtaking stationary vehicles when it hit the truck in a head-on collision. Police said the incident is being investigated and the truck driver will be questioned.

Provincial education depart...