In particular, Erdogan signed a document on the transfer of Hagia Sophia to the Department of Religious Affairs and permission to conduct Muslim services there.
He posted a copy of the document on his Twitter.
Earlier, the Turkish State Council annulled the decision of 1934 on turning the Hagia Sophia in Istanbul into a museum.
The Russian Orthodox Church regretted that the concern of the Orthodox churches about the status of Hagia Sophia in Istanbul was not heard in Ankara.