According to a spokeswoman for the court, they have been in custody since Easter. The young people, aged 15 and 16, are accused of using the short messaging service Telegram to discuss attacks on churches, courtrooms, railway stations and police stations. According to reports, there was no concrete plan for the attack.
Düsseldorf – Terrorverdacht: Anklage gegen drei Jugendliche aus NRW (deutschlandfunk.de)