Foreign Minister Mevlüt Çavuşoğlu on Saturday said the Fetullah Terrorist Organization (FETO) had "infiltrated American missions in Turkey".
"FETO infiltrated American missions in Turkey, the American judiciary and Congress and everywhere in all of its institutions," Çavuşoğlu said in Antalya.
FETO and its U.S.-based leader Fetullah Gulen orchestrated the defeated coup on July 15, 2016, which left 250 people martyred and nearly 2,200 injured.
Ankara also accuses FETO of being behind a long-running campaign to overthrow the state through the infiltration of Turkish institutions, particularly the military, police and judiciary.