The Americans were wounded in the cross-fire after gunfire erupted at the palace, Peters said.
"Pakistan stands by the Afghan government and the people in this hour of trial", Dr Faisal said.
Army Gen. Scott Miller, Resolute Support commander, was reportedly present at a meeting in Kandahar, Afghanistan, when what appears to be an insider attack occurred.
Taliban has claimed responsibility for the attack at the governor's compound.
Afghan officials say three top Kandahar province officials have been killed by their own guards in an attack at a security meeting that also wounded three Americans.
"After the meeting ended and as the officials were saying goodbyes, a member of the governor's team of bodyguards opened fire", Pashtun said. He was valued by USA commanders as a fierce ally against the insurgents, but human rights advocates criticized him for brutal tactics that at times swept up innocent civilians as well as militants. His father and uncle were killed by the Taliban in 1994; he became the provincial police chief in 2011, after his predecessor was murdered in a suicide bombing.
Two American troops were wounded in the assault, while Afghan police Chief Abdul Raziq was killed.
"The target was General Miller and General Raziq", Taliban spokesman Zabihullah Mujahid said on Twitter.
"We stabilized and treated the wounded and secured the area", said Butler, adding that Miller made sure the scene was secure and the wounded were taken away by medivac before he left the area and returned to Kabul.
While General Miller escaped unhurt, two U.S. soldiers were injured and a local journalist was killed in the shooting. "The attacker is dead", the US-Forces in Afghanistan tweeted.
Afghan National army soldiers search a vehicle at a checkpoint ahead of parliamentary elections scheduled for Oct. 20, at the Independent Election Commission compound in Kabul, Afghanistan, Wednesday, Oct. 17, 2018. "The brutal police chief of Kandahar has been killed along with several other officials", the statement read.
"Wish to see Afghan and other security forces succeeding to bring an end to this prolonged violence in Afghanistan", the COAS was quoted as saying by Maj Gen Asif Ghafoor, director general of the ISPR.
"General Raziq's death will have a huge impact on security and the election in the south because a lot of voters may not feel safe to go to vote", a senior security official commented after the attack.