Insurgents attacked the military side of Kabul`s international airport, which houses NATO headquarters, and explosions and gunfire were occurring.
A Taliban spokesman says the group will keep targeting government employees and other Afghans with links to the US-led coalition despite a warning from the United Nations that such killings may violate international law.
The Taliban believes Prince Harry has developed "mental problems" during his four-month tour of duty in Afghanistan.
An Afghan governor and at least 17 Taliban militants were killed in violence, authorities said on Sunday.
The Taliban had earlier threatened reprisals for the shooting, which came weeks after deadly riots over Quran burning.
The Taliban say their defense minister who was in office when the Islamist regime ruled Afghanistan in the 1990s died last year in a Pakistani jail.
The government is confident that the man police arrested in Sar Hawza district of Paktika province is Zabiullah Mujahid.
Day in Pics: 1st October
Showbiz World - October 1, 2014
George Clooney - Amal Alamuddin grand Venice wedding