Details added (first version posted at 08:23)
At least two suicide bomber attacked a US military base on the eastern outskirts of Kabul city with rocket propelled grenades and small arms fire Saturday morning, official said, DPA reported.
Three bombers disguised in women clothes tried to enter Camp Phoenix, a US military base on Jalalabad road, but were stopped by security personnel, Mohammad Zahir, head of Kabul's criminal investigative department, said.
Two militants were killed and two others detonated their explosives, he said.
Zahir had initially said that there were four bombers, but later he said that the fourth person was a driver who dropped off the armed militants and was later killed by security forces.
Major Tim James, a spokesman for NATO-led International Security Assistance Force said that two militants attacked the base with rocket-propelled grenades and small arms fire, injuring three soldiers.
Afghan forces stationed outside the base responded and killed the attackers, he said, but declined to reveal the nationalities of wounded soldiers.
Hashmat Stanikzai, police spokesman in Kabul, said the situation was under control and that the bodies of two burka-clad militants were found at the site.
Residents close to the scene also reported two loud explosions and small arms fire.