The Taliban say they were targeting a police station, but the majority of the victims were children studying at a madrassa nearby.
The new powers to act against financial institutions come as the Iranian regime flouts international sanctions via a large petroleum shipping network.
Prisoners say they were dragged out of their cells and beaten harshly in front of foreigners who the Taliban apparently were trying to impress.
The Taliban appear to be ramping up attacks in the capital as the Afghan government and US negotiators work to reach a peace deal.
Two Kabul University professors were among those arrested by the NDS in an operation against an ISIS cell.
The son of deceased al-Qaeda leader Osama bin Laden died sometime within the past two years, confirmed US officials.
The blast killed at least 34 people, mostly women and children, and wounded at least 17, officials said.
Many of the estimated 400 Turkmen militants who fought for ISIS in Syria and Iraq and survived are now in parts of Afghanistan that border Turkmenistan.
At least 20 people were killed and 50 others wounded in an attack targeting the Kabul office of President Ashraf Ghani's running mate, Amrullah Saleh.
Taliban attacks on schools and police alike show the group's lack of direction and low regard for human life.