A bus accident killed twenty eight people, including 22 children, in Sierre in the Swiss canton of Valais.

A bus accident killed twenty eight people, including 22 children, in Sierre in the Swiss canton of Valais.

Swiss police said on Wednesday that another 24 children were injured in the accident.
The passengers were returning from a skiing holiday in Val d'Anniviersto Belgium.

During a press conference early Wednesday morning, the Valais police commander said the incident was "unprecedented" and that even seasoned rescuers had been traumatized.

Helicopters and ambulances ferried the injured to four hospitals, police said.

In Brussels, the Belgian foreign ministry said most of the children were aged around 12 and the bus was one of three hired by a Christian group.