21 November 2021, North Rhine-Westphalia, Dortmund: Police are securing evidence in the Rheinische Strasse / Siegfriedstrasse area in the city centre. Due to a major police operation, several streets in the city center have been closed. There had been a physical altercation, said a police spokeswoman in the early evening, without giving details. "We are on the scene with strong forces. DPA / LEHTIKUVA / DIETER MENNE