Many children between 11 and 15 years old are among the dead.
The death toll in a horrific bombing at a girls’ school in the Afghan capital has soared to 50, many of them pupils between 11 and 15 years old, the Interior Ministry said Sunday.
The number of wounded in Saturday's attack has also climbed to more than 100, a government spokesman said.
The explosion struck a majority Shiite district in the west of the city.
It was condemned by the Taliban, which denied any responsibility.
No other group has yet claimed responsibility, although previous attacks have been attributed to the Afghan affiliate of the Islamic State group.
The IS faction, a radical Sunni group, has a history of brutal attacks on Afghanistan's minority Shiite population.
Ambulances were rushing to evacuate wounded from the scene of the blast near Syed Al-Shahda school, in the Shiite majority neighbourhood of Dasht-e-Barchi.
Government spokesmen said at least 50 people had been wounded in the attack.
It happened days after the remaining 2,500 to 3,500 American troops officially began leaving the country as part of a withdrawal announced by President Joe Biden.