The Islamic State group claimed it carried out the attack, in a statement from its Amaq propaganda agency.
Governor Spokesman Attaullah Khogyani told Pajhwok Afghan News nine people have been killed and 39 others injured so far in the attack.
Security forces and attackers are now fighting each other.
Militants have staged several attacks across Afghanistan this year.
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Gunmen rushed the building following the first blast at the entrance, a member of the provincial council told Reuters.
Qaderi said at least four attackers then stormed into the building with rocket-propelled-grenade launchers and AK-47 assault rifles.
The attack targeted the tax and revenue office of Nangarhar Province in the city center of Jalalabad on May 13.
April saw a series of attacks across the country targeting voter registration centers as the country gears up for long-delayed legislative elections due in October.
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On May 29, Starbucks plans to close all of its stores nationwide for an afternoon of racial bias training. He was charged with resisting arrest and disorderly conduct for arguing with Waffle House employees.
The incident follows a string of explosions in the country, with the latest suicide twin blasts in the capital city of Kabul killing 25 people and injuring up to 45.
The Taliban and IS have made clear their intention of disrupting the elections.
The Taliban recently launched their annual spring offensive, in an apparent rejection of a peace overture by the Afghan government.
Heavy security forces arrived at the spot of the attack.
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He also performed a special puja at the shrine in the temple town of Janakpur, some 225 km from capital Kathmandu . Modi greeted and interacted with the crowd at both Janakpur and Muktinath after visiting temples.
This article has been adapted from its original source.