The government also announced a national day of mourning for the victims.
At least 22 people are dead and eight are injured.
A spokesperson for the Afghan Interior Ministry told media outlets that two blasts went off outside the building before assailants tried to storm it.
Subtropical storm Alberto could create a headache for travelers trying to return from Memorial Day weekend getaways.
Alberto is expected to bring heavy rainfall and flooding in parts of Cuba and Florida on Sunday.
His new exhibition symbolically honors the 911 people who were swiftly cremated after the storm without being counted as official hurricane victims.
Power problems are persisting for hundreds of Western New Yorkers.
Forecasters say a storm system moving across the Southeast Monday could turn into yet another nor'easter.
This latest storm is expected to hit the region Monday with heavy snow and high winds, according to the National Weather Service.
The National Weather Service said Saturday the powerful nor'easter is pulling away from the New England coast.
A potentially dangerous storm was moving into New England on Thursday night while a heavy snowstorm was headed for the California mountains.
The storm is expected to hit much of the East Coast with snow, ice, rain and strong winds, according to the National Weather Service.