The Koran-burning protests sweeping Afghanistan have claimed American lives, a source tells CBS News, which reports that two US troops were shot dead this morning by "an individual wearing an Afghan National Army uniform." Four more were wounded in the attack, which occurred in the eastern Nangahar province near the Pakistan border. The attack comes as Hamid Karzai's office confirms to the AP that the US ambassador has delivered a formal letter of apology from President Obama for the Koran burning.
The source told CBS that the burning of Korans at Bagram was what fueled the shooting. The International Security Assistance Force confirmed the troop deaths but did not release the soldiers' nationalities. Meanwhile, the AP reports that five Afghans were killed in today's continuing protests. Three were apparently shot and killed by Afghan police, with two more felled by gunfire outside the Nangahar base. (Read more Koran burning stories.)