Washington (CNN) -- It was a brazen attack killing the most senior U.S. officer since 9/11, and authorities say they think an Afghan soldier was the gunman.
Maj. Gen. Harold Greene -- a longtime officer who was leading efforts to train soldiers in Afghanistan -- was killed Tuesday at a military training facility in Kabul.
Pentagon officials went out of their way to say the shooting would not change the relationship between U.S. and Afghan forces.
"I've seen no indication that there's a degradation of trust between coalition members and their Afghan counterparts," Pentagon spokesman Rear Adm. John Kirby told reporters Tuesday.
The Pentagon isn't commenting on the possibility of Taliban involvement, saying the Afghan military and international forces are in the early stages of an investigation.