The Pentagon acknowledged Friday the U.S. drone strike that killed 10 civilians, including seven children, in Afghanistan in the final days of the U.S. withdrawal was a “tragic mistake.” The Pentagon previously asserted the strike prevented an imminent threat by ISIS-K fighters, but investigations quickly revealed the victims were instead aid worker Zemari Ahmadi and his family members. Ahmadi’s family is demanding a probe into the killing. This is his brother, Romal Ahmadi.

Romal Ahmadi: “They should accept and pay their damages. They should come to me and apologize and offer their condolences. They should pay blood money. We are innocent. They should evacuate us.”

In Washington, D.C., lawmakers said they would investigate the deadly strike, while activists renewed calls for an end to U.S. drone warfare.