Several news websites including the Wall Street Journal have mistaken President Recep Tayyip Erdoğan's interpreter Ahmet Emrah Kale with Canadian Prime Minister Justin Trudeau in a photograph shot by Kai Pfaffenbach for Reuters.

The confusion was most probably caused by an incorrect caption written by Reuters Photo Service, in which a conversation at the G-20 summit in Germany's Hamburg was mistaken for a chat between U.S. President Donald Trump, Canadian Prime Minister Trudeau, President Erdoğan and Foreign Foreign Minister Mevlüt Çavuşoğlu, except it was not Trudeau participating in the conversation, but Erdoğan's interpreter Kale.

"U.S. President Donald Trump, Canadian Prime Minister Justin Trudeau and Turkish President Recep Tayyip Erdoğan talk during the working session at the G-20 leaders' summit in Hamburg, Germany, July 7, 2017," the initial photo caption read.

The image and its caption were widely used by news sites throughout the day, before Reuters realized its mistake and issued a correction.

The UK-based news agency changed "Justin Trudeau" to "identity of man unidentified," but news sites that already used the initial caption could not hide the mistake from careful readers.

The two-day G-20 summit in Hamburg focused on discussions about the global economy, climate change, the fight against terrorism and other international issues, but was partly shadowed by violent demonstrations leading to clashes between the German police and protesters in the northern port city.