A five-year-old girl was accidentally left alone on a train in canton Fribourg after missing her stop on the way to school.
The child was travelling from Montbovon when she was found safe at the next station in Villars-sous-Mont.
Despite being in a supervised group, the incident has raised concerns over supervision procedures.
Authorities say they are reviewing the process, while the girl's father is considering filing a complaint.
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