Insurgents have carried out coordinated attacks using rocket-propelled grenades and small arms fire on the U.S. Embassy, NATO headquarters and Afghan government offices in downtown Kabul.
The Taliban have claimed responsibility for the attacks.
"Police said the gunmen were firing from a tall office building that is under construction at Kabul's Abdul Haq square, which is about 300 yards from the U.S. Embassy," Fox News/AP reported.
A spokeswoman for the U.S. Embassy in Kabul confirmed that the attack had occurred, but said that no members of the embassy staff were wounded.
"The U.S. Embassy can confirm an attack has occurred in the area of the U.S. Embassy, including RPG and small arms fire," spokeswoman Kerri Hannan said in an email forwarded to journalists by the State Department. " We can confirm there are no casualties at this time among Embassy personnel."
Black Hawk helicopters have been seen heading to the site where additional insurgents are holed up, NPR's Quill Lawrence reported. He said some of the insurgents' shots appear to be being fired wildly and missing their targets.
Taliban spokesman Zabiullah Mujahid "claimed in a text message that suicide bombers using assault rifles were attacking the offices of the Afghan intelligence service," Fox News reported.
The CBS Early Show reported this morning that Afghan Police believe there are five Taliban attackers armed with assault rifles and rocket-propelled grenades. You can see the segment below.