The Ministry of Interior (MoI) confirmed earlier last night that 80 people lost their lives and 231 others sustained injuries.
MoI further added that several security personnel were also among those killed or wounded.
The Ministry of Public Health (MoPH) officials earlier said at least 61 people were killed and at least 207 others have sustained injuries in the attack.
The incident took place in Deh Mazang area where the demonstrators had gathered for a sit-in protest.
The Islamic State of Iraq and Syria (ISIS) terrorist group claimed responsibility behind the horrific attack and said the group targeted a Shiite gathering in the city.
This is the first time the terror group has claimed responsibility behind a large attack in capital Kabul as the loyalists of the terror group have been attempting to expand terrorist activities in Afghanistan.
In the meantime, the Afghan security forces have launched a major operation to root out the loyalists of the terror group in eastern Nangarhar province from where they initially launched their operations.