Earlier, two rockets targeted central parts of Afghanistan’s capital Kabul in an attack that left no casualties and caused damages to only a few buildings, officials say.
The US Bagram base is currently occupied by the 5th Aviation Battalion (Assault), and 6th Aviation Battalion (GSAB) of the US Army, with the 455th Air Expeditionary Wing of the US Air Force and other US Army, Navy , Marine Corps, and Coast Guard units, and their coalition partners.
Bagram, which is home to some 24,000 military personnel and civilian contractors, is located in an area of more than 5,000 acres (2,000-hectares).
The base is the frequent target of rocket and mortar attacks, with four US-led troops killed in more than a dozen attacks on the military base over the past two years.
Last year was the deadliest of the nearly decade-long war for international troops, with more than 700 killed, compared to just more than 500 in 2009. In January, 31 American and other NATO troops were killed.
NATO-led International Security Assistance Force has some 140,000 troops in Afghanistan, two-thirds of whom are from the United States.
Official figures show at least 2,330 foreign soldiers have been killed in Afghanistan since the US invasion of Afghanistan in 2001.
