The Turkish Foreign Ministry has summoned the German ambassador to the country after one of the German television channels broadcast a satirical song about President Recep Tayyip Erdogan, local media reported.

According to the Spiegel magazine’s Monday report, the NDR television channel broadcast a two-minute song mocking Erdogan on March 17. The magazine claims, citing its sources, that ambassador Martin Erdmann was summoned to the foreign ministry over the incident on March 22.

Erdogan is famous for his reaction to criticism. According to media reports, more than 1,500 people in Turkey are being investigated for insulting the president.

Turkey’s crackdown on journalists and restrictions on freedom of speech have been criticized by the international community, including the United Nations, the United States, the European Union, Russia and the organization Reporters Without Borders (RSF).