Trial begins in Finland of man accused of abusing 361 children online over three years

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Published: 2026-09-07T05:48:17.763Z • Permanent link

Detective Inspector Oskari Hiltunen, a seasoned investigator with the Tampere Police Department in Finland, is leading the case against Johan Puttonen, a 35-year-old man accused of abusing 361 children online over a period of three years. According to the police, Puttonen used various social media platforms to groom and exploit the young victims, some of whom were as young as 5 years old. The investigation, which began in 2020, involved a coordinated effort between Finnish and international law enforcement agencies. Finnish authorities collaborated with their counterparts in the UK, Ireland, and the US, to gather evidence and build a case against Puttonen. The police seized his mobile phone in December 2022, when he was arrested in connection with another criminal case. The search of his phone revealed thousands of videos and images of unidentified children, which have since been used as key evidence in the trial.

Puttonen's alleged crimes were facilitated by his use of encrypted messaging apps and the dark web. He used these platforms to communicate with his victims and other offenders, sharing child exploitation material and coordinating the abuse of the young children. The police investigation also uncovered evidence of Puttonen's involvement in the production and distribution of child exploitation content, including videos and images of the abuse. The case has sent shockwaves through the Finnish community, with many expressing outrage and disgust at Puttonen's actions. The police have praised the bravery of the victims and their families, who have come forward to support the investigation.

The trial, which began earlier this month, is expected to last several weeks. Puttonen's defense team has maintained that he is innocent and that the evidence against him is circumstantial. However, the prosecution has presented a wealth of evidence, including testimony from victims and witnesses, as well as forensic analysis of the seized mobile phone. The trial is being closely watched by experts and the general public, with many hoping that it will serve as a warning to potential offenders and a testament to the effectiveness of law enforcement in tackling child exploitation.

The case against Puttonen has significant implications for the Data Sources domain, which is responsible for the collection, analysis, and dissemination of data on online child exploitation. The police investigation has highlighted the need for greater cooperation and coordination between law enforcement agencies and technology companies to tackle this issue. The use of encrypted messaging apps and the dark web by offenders has made it increasingly difficult for authorities to track and prosecute offenders. The seizure of Puttonen's mobile phone has provided a unique opportunity for investigators to gather evidence and build a case against him.

The case has also raised concerns about the impact of social media platforms on the spread of child exploitation material. Facebook, Instagram, and other platforms have been criticized for their failure to adequately remove and prevent the spread of such content. The police investigation has shown that these platforms can be used to facilitate the abuse of children, and that greater action is needed to prevent this from happening in the future. Research communities and experts in the field are calling for greater cooperation between technology companies and law enforcement agencies to tackle this issue.

The case against Puttonen has also highlighted the need for greater awareness and education about online child exploitation. The victims and their families have spoken publicly about their experiences, highlighting the need for greater support and resources to be made available to those affected. The police investigation has shown that online child exploitation is a serious issue that requires a coordinated and sustained effort to tackle.