Two french teens and a Ukrainian tourist were killed in an avalanche in Les Deux Alpes area in France on Wednesday.  The teens were part of school group of which two other students and the teacher were injured in the slide. An investigation is underway as to why a teacher lead a group of students into the closed area on the resort where the avalanche was triggered.  The icy north-facing  area in question had been closed all season do to lack of snow.