"President Mohammad Ashraf Ghani is scheduled to deliver a speech at the ceremony to welcome Hekmatyar," the statement said.

Hekmatyar was dubbed "butcher of Kabul" by many Afghans for his active involvement in factional fighting in the 1990s and fighting Afghan and the U.S.-led coalition forces since the collapse of the Taliban regime in late 2001.

He inked a peace agreement with the Afghan government in September 2016 to join Afghan politics.

The peace agreement on Hizb-e-Islami and Hekmatyar's return to Afghan politics have triggered mixed reactions from Afghans.