At the time of this writing, there has been no corroboration from any source for Amaq’s claim.
ISIS claimed responsibility for a massive bombing in Kabul three weeks ago, which claimed over 80 victims.
Update, 10:45 AM EST: A spokesman for the NATO-US mission in Afghanistan has debunked the Islamic State’s claim of assassinating a U.S. military commander.
“That claim is false,” said Adam Stump, a civilian spokesman at the Pentagon.
“No Resolute Support people, U.S. or otherwise, hurt in today’s IED attack in Kabul, which targeted an Afghan army vehicle. Several ANA members were wounded only,” Col. Michael Lawhorn, Resolute Support Director of Public Affairs, told Breitbart News.