أنصار الإسلام
During the night, four AC-130 gunships maintained the pressure on the retreating Ansar al-Islam terrorists as they pulled back toward the Iranian border. The next day, the Americans and Kurds pursued the Ansar al-Islam forces further into the mountains, towards the Iranian border. Many fighters attempted to flee across the border, only to be arrested by the Iranians. Many were sent back across the border and were later captured by Kurdish forces. However, Kurdish sources allege that Iran in fact harbored many Ansar al-Islam fighters.