Among the dead were four civilians and three police officers, while another eight civilians were wounded. Daesh has claimed responsibility for the attack in Kabul.
Mass casualties feared as at least eight explosions rocked three churches and four hotels, authorities said.
Over 200 people were killed and hundreds more injured in a series of explosions across Sri Lanka on Easter Sunday.
The decision resolves the question of what would happen after President Ashraf Ghani's term expires on May 22. The presidential elections were initially slated for April 20 but were delayed until July 20, then pushed back again until September 28.
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