 According to published reports during the 1980s, Gulbuddin Hekmatyar's Hezb-e Islami Gulbuddin developed a reputation for attacking other resistance forces, especially those of Ahmad Shah Massoud, and raiding or blocking their food and arms supplies as well as caravans of relief organizations.According to author Steve Coll, Hekmatyar attacked Ahmad Shah Massoud so often that Washington (who was supporting him through Pakistan) "feared he might be a secret KGB plant whose mission was to sow disruption within the anti-communist resistance.