Kabul: A man in Afghan military uniform opened fire on Nato troops at an army training centre in Kabul yesterday, reportedly killing a US general and wounding at least 19 other people, including a senior German officer.
The attack came as a major blow to Nato's efforts to train up the Afghan military before foreign forces end their combat mission in December after 13 years of fighting the Taliban.
The New York Times and NBC news, citing unnamed sources, said a US major general had been shot dead in what would be the highest-level fatality of the war.
Among the injured in the attack at the Marshal Fahim National Defence University were 15 US troops, three Afghan soldiers and a German brigadier general, officials said.
Details of the incident were scarce, and the total number of foreign casualties was not immediately clear.
"A terrorist wearing Afghan army uniform opened fire at national army officers and their foreign colleagues and wounded several people," defence ministry spokesman Mohammad Zahir Azimi said on Twitter.
The British-run Afghan National Army Officer Academy is part of the university, but the Nato's International Security Assistance Force clarified an earlier statement that said the attack was inside the academy.
"ISAF confirms that an incident occurred today involving local Afghan and ISAF troops at the Marshal Fahim National Defense University," the force said. "ISAF can confirm one ISAF service member was killed."
A US official in Washington confirmed to AFP that the dead man was an American serviceman, but declined to comment on
President Hamid Karzai condemned the attack as a "cowardly" strike against Afghan and Nato officers who were visiting the military training university on the outskirts of the capital.
"It is the work of those enemies who do not want to see Afghanistan have its own strong institutions," he said.