By MIKE CORDER and MARK CARLSON
DORTMUND, Germany — A note left at the scene suggests a possible Islamic extremist motive for the attack on Borussia Dortmund’s team bus, and one suspect has been detained, German prosecutors said Wednesday.
Frauke Koehler, a spokeswoman for federal prosecutors, said investigators are focusing on two suspected Islamic extremists and have searched their homes — but authorities said a range of other motives are possible for the Tuesday evening attack before a Champions League match. One of the Islamic suspects, a man, was arrested.
Investigators found three copies of the note at the scene, including demands for the withdrawal of German Tornado reconnaissance jets that are assisting the fight against the Islamic State group and for the closure of the U.