Two French schoolchildren and a Ukrainian tourist have been killed in an avalanche at a ski resort in the French Alps, officials say.br Five more members out of a group of 10 pupils from Lyon are reportedly still missing.br Several pupils were found in a state of cardiac arrest and their teacher was found unconscious, reports said.br The avalanche struck the group, their teacher and the Ukrainian on a closed piste in the Les Deux Alpes area.br More than 60 rescuers with dogs assisted by four helicopters are on the scene, the local prefecture said in a statement.