Turkish citizens residing in Germany are able to cast their votes in several cities across the country, including Berlin, Munich and Cologne. In Turkey, eligible voters will be able to cast their ballots on April 16.
The referendum has soured relations between Berlin and Ankara after authorities canceled several rallies where Turkish officials were expected to speak in favor of the constitutional amendments.
Turkish President Recep Tayyip Erdogan responded by accusing the German government as well as Chancellor Angela Merkel of engaging in "Nazi practices."
He has accused European authorities of launching a "crusade" against Islam and said the continent was hosting the "spirit of fascism."
"Europe is swiftly rolling back to the days before World War II," he said in a speech aimed at rallying support for the proposed constitutional amendments.
/DW/
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