A statement from the Kremlin said that Mr Putin had "decreed to relieve Ivanov of his duties as head of the Russian presidential administration," but gave no reason.
Kremlin antaman tiedotteen mukaan presidentti Putin "päätti vapauttaa Ivanovin tehtävistään Venäjän presidentinhallinnon päällikkönä", mutta perusteluja irtisanomiselle ei kerrottu.