VIENNA: Three people were missing on Saturday after massive thunderstorms and rainfall in southeastern Switzerland caused a landslide, authorities said. One woman was pulled out alive after being buried by the landslide in the Alpine valley of Misox in Graubunden. A rescue operation for the three others is ongoing. The rockslide hit a group of houses in the municipality of Lostallo.Rescuers have been searching all day Saturday with excavators and specially-trained search dogs. William Kloter from the Swiss police, who is heading the rescue operations, told local media that he was hoping to find the three missing persons alive.