A popular Alpine tourist train, the Glacier Express, has derailed in southern Switzerland, killing one person and injuring almost 40 others, Press TV reported.
"Six of the injured were in a serious condition," AFP quoted spokesman for police in Valais Jean-Marie Bornet as saying.
"Three wagons were derailed, two are completely laid down. In these two wagons, the passengers were mainly Japanese," he added.
The accident took place between the skiing resort of Lax and the village of Fiesch, near the Swiss-Italian border.
"We have to expect that the train was quite full because it's the height of the tourist season," swissinfo.ch quoted an on site reporter with Radio Rottu as saying.
Medical helicopters have been carrying the injured to Visp for treatment.
Heavy rains, thunderstorms and fog reportedly rolled through the area late Thursday and early Friday. However, the cause of the accident is not determined yet.
A major Swiss attraction, the Glacier Express, travels from St. Moritz to Zermatt through some picturesque Alpine views.