A bus carrying Belgian students crashed into a tunnel wall in Switzerland, killing 28 people, 22 of which were children.
Another 24 students were taken to hospital with injuries, local police say.
The bus was carrying 12-year-olds from two schools back from a ski holiday in the southwestern region of Valais when it crashed on Tuesday evening. The cause of the accident has yet to be determined.
Police reported that the bus veered, hit a curb and then crashed into a concrete wall. The front of the vehicle was heavily damaged by the impact, leaving people trapped in side.
The highway was closed for traffic as the rescue operation was underway, AP reported. Some eight helicopters and a dozen ambulances took victims to the hospital. Dozens of firefighters and police, 15 doctors and three psychologists were also called to the scene.
According to Belgian media, the children who suffered in the crash came from two towns in Flanders.