The statement appeared to refer to a protest on Sept. 3 when some 25,000 Kurdish supporters demonstrated in Cologne against Turkish President Tayyip Erdogan, some carrying posters of Abdullah Ocalan, the jailed leader of the Kurdistan Workers Party (PKK), which is listed as a terrorist group by the European Union and the United States, and is banned in Germany.
Turkey summons the ambassador of Germany after at least 10,000 people rally in Cologne in support of the referendum.