At around 3.20 p.m., the Bielefeld police received a call from an as yet unidentified person with a male voice threatening an attack within the next ten minutes at Bielefeld Central Station. As a result, the Bielefeld police immediately initiated measures together with the Federal Police. The main station was closed and no trains are currently running. There are currently no indications of any specific danger. The Bielefeld police are still investigating the identity of the caller. Sniffer dogs are currently being used to search the station.