Fugitive Anis Amri, the Tunisian wanted as the main suspect in the Berlin Christmas market attack on Monday which left 12 people dead, was shot and killed by police in Milan early on Friday after entering Italy via the French town of Chambéry, in the south-east Savoie region, according to Italian officials.
One of the teenagers returned home after police alert but French officials fear the other 'radicalised' girl could be trying to head for Syria.
Passengers had left Alpine ski resort when coach skidded off motorway near Chambéry, leaving 13 people hurt.
Several unused IV nutrient bags from the same batch given to the newborns who died were found to have traces of bacteria, says hospital.
She admits having wanted to relieve their suffering but denies seeking to poison them to death, according to a police source cited by local media.