15-year-old Natascha Colding-Olsen planned to build a bomb to blow up two schools in Denmark: Sydskolen in Fårevejle (near Holbæk), which she previously attended, and Carolineskolen, a Jewish school in Copenhagen. The plotter was 17 at the time of her trial. An American captain from Iraq warned Denmark, which led to detention of the girl and a 24-year-old Turkish man. The plotter, a recent convert to Islam, wrote on her Facebook page of her desire to help convert more Danish people to Islam and joined a Facebook page for ISIS supporters. Colding-Olsen was described as having undergone a rapid transformation, changing within a few months from a teenager interested in clothes and boys, into a young woman interested in fighting a holy war. She told the court that she became interested because Islamist ideas and ISIS were "exciting".
