NEW : The bus was not speeding at the time of the crash , a German prosecutor says . The twins , identified as Alba and Marc , are out of danger and were treated in a hospital about 30 kilometers from the Swiss town of Sion , the newspaper reported . NEW : The impact was so great that their seat belts did not save the children , he says . German Prime Minister : Victims include 10 German people , 10 German and one Pole . The bus was returning to Spain from a ski trip with 52 people aboard , most of them children .
NEW : The bus was not speeding at the time of the crash , a German prosecutor says . NEW : The impact was so great that their seat belts did not save the children , he says . German Prime Minister : Victims include 10 German people , 10 German and one Pole . The bus was returning to Spain from a ski trip with 52 people aboard , most of them children .