What happened
Jammu Siltavuori abducted and killed two eight-year-old girls in Helsinki in 1989, after a history of serious sexual offenses.
The investigation
The girls’ disappearance led to an urgent search and evidence that quickly brought investigators to Siltavuori.
What the courts or investigators concluded
He was convicted and ordered into indefinite institutional custody because of the danger he presented.
Why the case remains significant
The murders profoundly affected Finland and led to enduring debate about monitoring high-risk offenders, child safety and the limits of rehabilitation in cases involving repeated predatory violence.
Case context
Crime by Region organizes cases geographically so readers can move from one file to other investigations from the same country. For unresolved or contested cases, the wording above reflects the distinction between confirmed events, investigative theories and findings actually established in court.