BERLIN: A teenager suspected of plotting an attack against Jews was arrested in September in western Germany, a court source and local media reports said Thursday. The 15-year-old boy has been placed in pre-trial detention over plans to “commit a crime,” Dusseldorf prosecutors told AFP, without providing further details. Police had previously detained the suspect in August following intelligence it had received, according to the Bild and Spiegel newspapers. The teenager was released but arrested again after investigators discovered conversations on his phone with a suspected foreign extremist believed to have tried to talk him into perpetrating a knife attack. The two allegedly discussed potential targets, including festivals and Jewish communities, and the teenager also reportedly posted videos on TikTok featuring Daesh flags, according to Bild and Spiegel. The arrest came as Germany has tightened security measures after a knife attack in the western city of Solingen on August 30 that was claimed by the Daesh group. Three people were killed and several others were injured in the Solingen attack. A 26-year-old Syrian suspect, who had been slated for deportation but evaded law enforcement, turned himself in after a day on the run and confessed to the attack. And in June, a German court sentenced a 15-year-old boy to four years in jail for planning an Islamist attack on a Christmas market in the western city of Leverkusen.