Teltow-Fläming is a Kreis in the southwestern part of Brandenburg, Germany. Neighboring districts are Dahme-Spreewald, Elbe-Elster, the districts Wittenberg in Saxony-Anhalt, the district Potsdam-Mittelmark, and the Bundesland Berlin. From Wikipedia
Authorities in Mellensee evacuated residents and conducted a controlled explosion of the non-defusable ordnance, lifting safety measures by early afternoon.