An attack on Kabul airport has now ended after the gunmen were killed, officials have said.
Gunmen have used rockets to attack Kabul International Airport in the Afghan capital, a senior military official has said.
The gunmen occupied two buildings, which were under construction and used them as a base to fire rockets and gunfire toward planes at the airport, according to NBC News.
ISAF jet fighters are currently flying over Kabul, said Afzal Aman, a general in the Afghan army in Kabul.
An explosion followed by bursts of gunfire have been heard near Kabul International Airport in the Afghan capital.
Smoke was also seen rising above the facility, which is used by civilians and the military, a Reuters witness said.
NBC News Chief Foreign Correspondent Richard Engel, who is in the Afghan capital Kabul, wrote on Twitter:
The Taliban have claimed responsibility for a rocket attack on the Independent Election Commission (IEC) in the Afghan capital Kabul.
This is the second attack launched against an IEC office this week, as the Islamist insurgency seeks to derail the April 5 election it claims is a "Western-backed sham".
Armed men have attacked the Afghan election commission with rockets and gunfire one week before the presidential elections begin.
One warehouse in the compound is currently on fire after it was hit by a rocket-propelled grenade, Associated Press reported.
Police Chief General Mohammad Zahir said the group entered a building 800 metres (2,624 feet) from the Independent Election Commission, adding, "The fighting is still ongoing."
Heavy security has been sent to the Independent Election Commission headquarters in Kabul as gunfire and blasts were reported around the building compound.
Can you see the yellow building? If it's believed that the attackers have taken position in that building. http://t.co/4XzNaw9Bvz
NBC News Chief Foreign Correspondent Richard Engel reported from the Afghan capital Kabul:
Election commission Spokesperson tells @nbcnews from a safe room that the compound has come under heavy rocket and machine-gun fire.
An explosion followed by gunfire targeted a building close to the Independent Election Commission headquarters in Kabul, Reuters reported, citing staff and police.
"We can only confirm that a number of armed insurgents have entered a building close to the Independent Election Commission," Kabul's police chief spokesman Hashmat Stanekzai said.
Four people have been trapped in a guesthouse under attack by Taliban insurgents in the Afghan capital Kabul, the US-based aid group Roots for Peace said.
"I can confirm it was attacked and that there are only four people [inside]," country manager Hajji Mohammad Sharif Osmani told Reuters. "The rest of the guys are outside."
A witness told the news agency they saw more than 10 people who appeared to be foreign nationals being evacuated from the building.
Osmani said that most of the group's staff had been rescued and no one was known to have been killed.