Harare, Aug 2 (Xinhua) Thirty-seven people were killed Sunday when the passenger bus in which they were traveling collided head-on with a truck in northern Zimbabwe, officials said.

The accident occurred at around 8 a.m., 80 km south of Harare.

Police spokesman Andrew Phiri said 33 people died on the spot, while four others died later.

Twenty-nine people were injured in the accident.

Phiri said the accident occurred when the bus driver tried to overtake a vehicle.

One person from the truck was also killed.

He, however, did not mention who many people were on board the vehicles at the time of the accident.