Zalmay Khalilzad said in a statement the agreement was secured yesterday.
Khan, who is governor of Afghanistan's western Herat Province, was among several commanders who were not cooperating with Kabul in the DDR program.
Afghanistan this week started implementing the main phase of the program, which seeks to disarm 60 percent of an estimated 100,000 armed militiamen ahead of next September's presidential elections.
Earlier this month, the United Nations expressed its concern at the stalled disarmament process.
(dpa)
Khan, who is governor of Afghanistan's western Herat Province, was among several commanders who were not cooperating with Kabul in the DDR program.
Afghanistan this week started implementing the main phase of the program, which seeks to disarm 60 percent of an estimated 100,000 armed militiamen ahead of next September's presidential elections.
Earlier this month, the United Nations expressed its concern at the stalled disarmament process.
(dpa)