The Taliban says it will continue to target Afghan officials and civilians linked to the United States.
The threat made Thursday by Taliban spokesman Zabiullah Mujahid comes despite a warning from the United Nations that such attacks could violate international law.
An annual report published by the U.N. mission in Afghanistan shows that the killing of civilian government employees is up 700 percent.
A Taliban spokesperson said government employees are not considered civilians but criminals.
"They are directly involved in the protraction of our country's invasion and legally we do not find any difficulty in their elimination, rather we consider it our obligation," Mujahid said.