Smartphone data proved decisive: Kyoto police analyzed the adoptive father's activity history, narrowed the search area, and found Yuki Adachi's body

Kyoto Prefectural Police narrowed the search area by analyzing the foster father's phone and other activity logs, leading to the discovery of a shoe and the body of 11-year-old Yuki Adachi in Nantan, Kyoto.

The digital trail from the foster father became a key lead in the missing-person case and directly guided the search and evidence collection.

The suspect has admitted to corpse abandonment charges and reportedly made statements acknowledging the killing as well.

The case highlights how digital movement records can be pivotal in missing-person investigations and in uncovering the full scope of a crime.