Security forces and attackers are currently fighting each other.

Sounds of heavy and light weapons could be heard from the spot where the attack is taking place.

Governor Spokesman Attaullah Khogyani told Pajhwok Afghan News nine people have been killed and 39 others injured so far in the attack.

Heavy security forces arrived at the spot of the attack.

Earlier, eyewitnesses told Pajhwok Afghan News that two suicide bombers first thrown grenades into the Revenue Department and then blown up their explosives, allowing several armed men to enter the compound.

No group has claimed responsibility for the attack so far.