Kabul , Afghanistan ( CNN ) -- At least 17 people were killed in central Kabul on Saturday when a suicide bomber struck a vehicle in a military convoy , according to officials . Five troops and eight civilians were killed in the attack , NATO 's International Security Assistance Force said . Afghan officials said four Afghans , including two students , were also killed . Among the dead was Master Corporal Byron Greff , a Canadian , according to the Canadian Expeditionary Force Command . It was not immediately clear whether he was included in the ISAF-provided figure . A U.S. military official said earlier that 13 Americans had died , but an ISAF spokesman could not confirm that number . The U.S. official emphasized details are continuing to unfold . A heavily damaged vehicle was believed to be an armored bus that was carrying U.S. troops from one base to another . A senior NATO official identified it as a custom-built , heavily armored Rhino . The attack caused a `` number '' of NATO and local Afghan casualties , ISAF said in a statement . Four Afghans , including two students , were also killed , said Hashmat Stanikzai , spokesman for Kabul 's police chief . Afghan President Hamid Karzai offered his sympathies to the families of the victims in a statement and said the cowardly character of the attack demonstrates `` the very evil and heinous nature of the enemy . '' A Taliban spokesman confirmed Saturday 's attack in a text message , saying it killed `` 16 foreign soldiers , one civilian '' and injured many others . Taliban casualty counts are often inflated ; there was no other reliable indication 16 foreigners were killed . Stanikzai said the vehicle used in the attack appeared to be a red Toyota Corolla packed with a significant amount of explosives . It was unclear how many people were wounded , said Sediq Sediqqi , a spokesman for the Interior Ministry . The U.S. Embassy in Kabul expressed condolences to families and said it will continue the victims ' `` dedicated work on behalf of peace in this country and region . '' `` It 's a shock . It makes you mad . It makes me angry , '' said U.S . Ambassador Ryan Crocker . `` We are not going to let these guys win . '' The attack was one of two targeting NATO-led forces on Saturday . U.S. and coalition casualties in Afghanistan and Iraq . A gunman wearing an Afghan army uniform turned his weapon on coalition forces during training , killing three and wounding several others , ISAF said . The shooter was killed in the incident in southern Afghanistan . The coalition did not provide any other details about the shooting , and did not disclose the nationalities of those killed . In another suicide attack in northeastern Afghanistan , a woman in a burqa detonated herself near the nation 's intelligence agency . She tried to enter the National Directorate of Security and was shot at , but she still managed to detonate herself , said Sabour Alayar , deputy police chief of Kunar province . Two officers and two civilians were wounded , he said , adding that the female suicide bomber was about 25 years old . Alayar said they had intelligence of a suicide bomber looking for a target , and their security forces were on alert . Gen. John R. Allen , commander of ISAF , condemned Saturday 's attacks across the country . `` I am both saddened and outraged by the attacks that took place today against Coalition forces and the people of Afghanistan , '' Allen said in a statement . `` The enemies of peace are not martyrs , but murderers . To hide the fact that they are losing territory , support , and the will to fight , our common enemy continues to employ suicide attackers to kill innocent Afghan fathers , mothers , sons and daughters , as well as the Coalition forces who have volunteered to protect them . '' The U.S.-led war in Afghanistan marked its 10th year earlier this month having passed two major milestones : The Taliban has been forced out of power and Osama bin Laden is dead . But Afghanistan has been hit by a wave of high-profile attacks in recent months that have jeopardized the peace negotiations . September 's turban bomb assassination of former Afghan President Burhanuddin Rabbani , revered by many as a father of the Mujahedeen movement that ousted the Soviets in the 1980s , appears to have dealt the biggest blow to the peace process . Rabbani was the chairman of President Karzai 's High Council for Peace , which has been trying for a year to foster dialogue with the Taliban -- a strategy that Karzai publicly abandoned following Rabbani 's killing . Nearly 2,800 troops from the United States and its partners have died during the 10 years of war , according to a CNN count . CNN Pentagon correspondent Barbara Starr and journalist Ruhullah Khapalwak contributed to this report .
Master Corporal Byron Greff , a Canadian , was killed . Angry U.S. ambassador says `` we are not going to let these guys win '' Four Afghans , including two students , are killed . In a separate attack , a female suicide bomber targets the nation 's intelligence agency .