Afghan officials said the death toll jumped to 140 following Friday's assault on the army headquarters in the northern city of Mazar-i-Sharif.
Another 160 people were wounded in the attack, Mohammad Ibrahim Khair Andesh, head of the provincial council, announced.
The attack starkly highlighted the difficulty of the long struggle by the Afghan government to defeat the Taliban insurgency.
After arriving in Mazar-i-Sharif to visit the base, President Ashraf Ghani ordered flags be flown at half-mast on Sunday in memory of the troops who died.
Ghani held an emergency meeting with senior security officials and called for a "serious" investigation into the attack.
In a statement online, he condemned the assault as "cowardly" and the work of "infidels".
As many as 10 Taliban militants, dressed in Afghan army uniforms and driving military vehicles, made their way on to the base and opened fire on mostly unarmed soldiers eating and leaving a mosque after Friday prayers, according to officials.
They opened fire with rocket-propelled grenades and rifles, and several detonated suicide vests packed with explosives.
Witnesses described a scene of confusion as soldiers were uncertain about the attackers' true identity.
"It was a chaotic scene and I didn't know what to do," said one army officer wounded in the attack. "There was gunfire and explosions everywhere."
The base is the headquarters of the Afghan National Army's 209th Corps, responsible for much of northern Afghanistan, including Kunduz, a province that has seen heavy fighting.
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source : Al Jazeera
Sunday
23 April 2017
12:40:20 PM
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(AhlulBayt News Agency) - Afghanistan is observing a national day of mourning on Sunday after scores of soldiers were killed by Taliban militants disguised as fellow troops in the deadliest attack of its kind on an Afghan military base.