General John Nicholson, an Afghanistan commander for the U.S. Forces said:
“The recent Afghan and U.S. special operations raid will lead to the tactical defeat of IS-K in northern Afghanistan.”
Mr Nicholson added: “Pockets of former Taliban fighters may claim allegiance to IS-K, but they are isolated and losing."
"We have them on the defensive. They will not win.”
Since the start of this year, Afghan and U.S. forces have killed 90 IS-K fighters, with the majority being in Darzab.
A series of ASSF and U.S. Special Operations Forces (SOF) counterterrorism operations focused on dismantling IS-K leadership.
The group has since appointed a new leader in Northern Afghanistan, Mawlavi Habibul Rahman, a native Uzbek.
Also, like Hekmatullah, Rahman has had intermittent ties to both the Taliban and Islamic Movement of Uzbekistan.
Last month, ASSF and U.S. Special Forces killed an IS-K platoon commander and another fighter during a partnered nighttime raid in Mughul. Four days earlier they eliminated four IS-K fighters in Darzab.
On the evening of 16 March, an ASSF nighttime raid on the IS-K headquarters in Jowzjan resulted in the death of another 13 fighters.
Afghan forces captured Omair and Abu Samaya’s predecessor Khitab Aka, IS-K’s former head facilitator of foreign fighters in Jowzjan, on 28 January.