Bern, Three people were killed and three others were injured after a helicopter carrying six people crashed on the northern side of the Petit Combin area in the Swiss canton of Valais. The B3-type plane was damaged at the mountain landing site in Petit Combin. After reaching the top of the mountain, 3,668 meters above sea level, it slid to the northern slope, regional police said in a statement. The Swiss Safety Investigation Service opened an investigation to determine the causes of the accident. In May 2023, three people were killed in a small tourist plane crash in a mountainous area in western Switzerland. Source: Qatar News Agency