Charlotte Niddam, 15, had attended a school in Hertfordshire and her family have not heard from her since the blaze

Charlotte Niddam, 15, had attended a school in Hertfordshire and her family have not heard from her since the blaze

Charlotte Niddam, believed to be 15, previously attended Immanuel College in Hertfordshire, according to multiple reports

The Valais region police force published a statement on Sunday confirming that all 40 people killed in the fire have now been identified.

The family of Charlotte Niddam announced her death "with great sadness" as Swiss authorities confirmed all victims had been identified.