The man was convicted of sexual abuse towards children and sexual assault and must pay damages of over 400,000 kronor ($60,050), wrote the Uppsala District Court in a statement.
The man also sent pictures and videos to the girls he befriended online, saying that they featured him abusing his daughters. The judge described this material as “particularly ruthless”. The kids appearing in the films were not his children.
The 27-year-old suspect was accused of convincing 57 girls aged between ten and 13 to send him explicit photos of themselves or to undress for him in front of a webcam.
“He nags at them until they send him pictures,” the prosecutor said during the trial, which began in August.
Police tracked the man down by tracing his IP address and then raided his house in the beginning of February. Officers then found a large number of pornographic images and films in his mobile phone and on his computer.
According to the police, the man has had extensive contact with several young girls, some as young as between 10 and 13 years of age, and all from different parts of Sweden.
Computers and a mobile telephone belonging to the suspect revealed “a lot of images and many child pornography films,” said a statement from the prosecutor.
Parents to the affected children were sent a letter by the police informing them of officers’ suspicions and that the children probably haven’t told them about what has happened.
The crimes were reportedly committed in Uppsala between 2009 and 2012.