Van De Walle left her home in Ichtegem on Friday morning to go to school, but never arrived there. She didn't return home either and a missing person alert was issued. A major search operation took place last weekend, without any result.
The search looked set to end in a deadlock, but CCTV footage accelerated the investigation yesterday. It turned out Kiany was seen on security footage taken in the Brussels North station. It is still unclear why she travelled to the Netherlands and what her motives were.