US forces have killed the head of the Daesh group´s Afghanistan branch, the Pentagon said Friday, marking the third time in a year the franchise has lost its leader.

Abu Sayed was killed in a July 11 strike in Afghanistan´s northeastern province of Kunar on the headquarters of Daesh-Khorasan Province (IS-K), which also killed additional militants, the Pentagon said in a statement.

“You kill a leader of one of these groups and it sets them back,” Pentagon chief Jim Mattis told reporters.

“It´s obviously a victory on our side in terms of setting them back. It´s the right direction.”

First emerging in 2015, IS-K overran large parts of Nangarhar and Kunar provinces, near the Pakistan border, but their part in the Afghan conflict had been largely overshadowed by the operations against the Taliban.