Turkish President Recep Tayyip Erdogan on Saturday said officials from Saudi Arabia, the United States, Germany, France and Britain have listened to audio recordings related to the killing of journalist Jamal Khashoggi at the Saudi Consulate in Istanbul.

Erdogan’s comments are the first public confirmation of the existence of recordings of the October 2 killing of The Washington Post columnist at the consulate where he had gone to get papers to marry his fiancee.

Erdogan said: “They also listened to the conversations and they know.”

He called on Saudi Arabia to rid itself of the “stain” by cooperating with Turkey over the investigation.

Erdogan said a 15-member team that Turkey says was sent to kill Khashoggi know who is behind the killing as well as the location of his remains.