Officials said General Razeq and General Miller and the other officials were walking towards a landing zone as the helicopter taking the US General's party back to Kabul approached to land when the gunman, who was waiting outside, opened fire on the group.
Miller was in Kandahar on Thursday but was not wounded in the incident. There are also reports that the region's provincial governor, Zalmay Wesa, has died of wounds suffered in the attack; Dastageri would neither confirm nor deny those reports to NPR. Initial reports indicate this was an Afghan-on-Afghan incident. Miller was not hurt in the shooting, NATO's Resolute Support mission spokesman Colonel Knut Peters said in a statement.
Mr. Mattis said he had yet spoken to Gen. Miller and could not confirm the Taliban's claim of responsibility.
Two American troops were wounded in the assault, while Afghan police Chief Abdul Raziq was killed. A Taliban spokesman said Miller was the intended target. North Atlantic Treaty Organisation troops, which handed over security to Afghan forces at the end of 2014, mostly train and assist with air power.
In general, in Afghanistan, the rural areas outside the city are considered to be much harder to secure and many of them are under Taliban influence or control.More news: Andrew Benintendi is at Fault for Red Sox's 5th-Inning Meltdown
Local media outlets reported that a bodyguard for Governor Wesa opened fire on the officials while they were making their way to a helipad after the meeting.
"He was seen as crucial to the security of Kandahar, the birthplace of the Taliban where the group continued to have a presence".
Raziq narrowly escaped an attack past year in which five diplomats from the United Arab Emirates were killed in Kandahar. "I express my deepest sympathy and grief with all people of Afghanistan, especially with residents of the town".
Coming before nationwide parliamentary elections Saturday, the loss of the Kandahar leadership casts a further shadow on a political season already marred by bloodshed.
Security has been steadily deteriorating in Afghanistan with increasingly brazen attacks being carried out by insurgents and Afghanistan's security forces have been on high alert ahead of Saturday's elections.
It was unclear if the attack would affect the process, following a meeting last week of Taliban officials and the USA special envoy, Zalmay Khalilzad, but complicates an already hard situation.
Earlier Wednesday, a parliamentary candidate in southern Helmand province was killed when a bomb exploded while he was holding a meeting in the courtyard of his campaign headquarters in the provincial capital, Lashkar Gah.