Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: (CNN) Police in Germany said Friday a New Year's Eve terror alert that closed two busy Munich train stations was prompted by the threat of suicide attacks linked to ISIS. It was not immediately clear exactly how the alert was linked to the terror group. Threats were made against the central Hauptbahnhof station and the Pasing station west of the city, Police Chief Hubertus Andrae said. The stations were evacuated on Thursday evening and service stopped for around eight hours. Authorities told the public additional officers were being called in to find possible suspects. On Friday, 100 additional officers were still on duty, Andrae said.The plot involved five to seven potential suicide attackersThe tip about the plot came from another country's intelligence agencyPolice asked residents to avoid large public crowds 
 Question:Hermann said there were no concrete indications that a terror attack could take place in _ in the coming days.

Munich