Algeria's President Abdelaziz Bouteflika has resigned after weeks of mass protests, ONA reports citing the news agency APS.
Mr Bouteflika, who had been in power for 20 years, had already dropped plans to seek a fifth term as opposition to his rule grew.
The powerful Algerian army had called for the 82-year-old to be declared incapable of carrying out his duties.
He suffered a stroke six years ago and has rarely appeared in public since.
Leaders of the protests had rejected Mr Bouteflika's offer to go by the end of his current term - 28 April - as not enough.
The demonstrations have also led to calls for the whole political system, in which the military plays a significant role, to be overhauled.
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