Reporting from Kabul, Afghanistan—A veteran Afghan air force pilot opened fire inside a military compound at Kabul International Airport early Wednesday, killing an unknown number of Afghan and NATO forces in what might have been another in a series of attacks by Taliban infiltrators, authorities said.
U.S. Master Sgt. Jason Haag, a NATO spokesman, said some NATO forces were killed, but could not say how many.
The pilot, whose identity was not immediately released, began shooting about 11 a.m. after an argument with a foreign colleague, according to a statement released by Afghan Defense Ministry spokesman Gen. Mohammad Zahir Azimi.
"An Afghan officer opened fire on foreigners after an argument," Azimi said. "For the past 20 years, he has been a military pilot."