In his own words, “Today, certain parts of the military have decided that intervention was necessary. Do I really have a choice? Because I do not wish blood to be shed,”
Keita indicated in a brief statement broadcast on national television.
Keita said that he has decided “to give up my duty from now on.”
It is unclear if the military is now officially in charge of the country.
Earlier, Keita and Prime Minister Boubou Cisse were detained by soldiers in a dramatic escalation of a months-long crisis in the country.
The development came hours after soldiers took up arms and staged a mutiny at a key base in Kati, a town close to Bamako.
The soldiers were expected to deliver a statement later, while countries in West Africa, along with former colonial power France, the European Union and the African Union, denounced the actions of the soldiers and warned against any unconstitutional change of power.
Mali’s years-long conflict, in which ideologically-motivated armed groups have stoked ethnic tensions while jockeying for power, has spilled into the neighbouring countries of Niger and Burkina Faso, destabilising the wider Sahel region and creating a massive humanitarian crisis.
Earlier on Tuesday, opposition protesters gathered at a square in Bamako in a show of support for the soldiers, while foreign embassies advised their citizens to stay indoors.