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BERLIN, GERMANY - JUNE 18: German Interior Minister Horst Seehofer, the domestic intelligence chief (BfV) Thomas Haldenwang (not seen) and Federal Crime Office (BKA) head Holger Munch (not seen) hold a press conference on the evaluations of the killing of a senior German politician, Walter Lubcke, who was president of the Kassel regional council in central Germany, and arrested suspect Stefan E. in Berlin, Germany on June 18, 2019. (Photo by Erbil Basay/Anadolu Agency/Getty Images)

BERLIN, GERMANY - JUNE 18: German Interior Minister Horst Seehofer, the domestic intelligence chief (BfV) Thomas Haldenwang (not seen) and Federal Crime Office (BKA) head Holger Munch (not seen) hold a press conference on the evaluations of the killing of a senior German politician, Walter Lubcke, who was president of the Kassel regional council in central Germany, and arrested suspect Stefan E. in Berlin, Germany on June 18, 2019. (Photo by Erbil Basay/Anadolu Agency/Getty Images)