Turkey has sent an official request to US government for the extradition of Fethullah Gulen, the man it accuses of plotting a failed military coup in Ankara.
White House spokesman Josh Earnest told media that documents related to the extradition of the cleric who lives in self-imposed exile in the US were submitted to US authorities by the Turkish government.
"The Justice Department and other US agencies are now reviewing the documents and will take action in accordance with a decades-long treaty between the two countries with respect to the extradition of criminals."
Earlier in the day, Turkish President Recep Tayyip Erdogan spoke to US President Barack Obama on the issue.
"The president made clear to President Erdogan that the United States doesn't support terrorists and doesn't support individuals who conspired to overthrow a democratically elected government," Anadolu Agency quoted Josh Earnest as saying.
He said Obama "reiterated once again the strong commitment of the United States to the democratically elected civilian government of Turkey" and commended the Turkish people's effort in "defending the government and repelling the coup" last week.