The issue of extradition of the Islamic preacher Fethullah Gulen to Turkey , whom Ankara accuses of organizing a coup d'etat , should be ruled by a US court, said the US Vice President Joe Biden during his visit to Turkey, reports the RIA Novosti.

"We should make clear under American law that no president of the United States has authority to extradite anyone under his own power, that only an American court can do that…It's totally understandable why the people of Turkey are angry. But there should be no doubt that we will continue to work closely with the Turkish government as this process unfolds," said Biden.