A U.S. drone strike in Afghanistan killed at least 15 civilians on Wednesday, drawing United Nations condemnation and calls for an independent probe into the attack. In a statement, the U.N. Assistance Mission in Afghanistan (UNAMA) said the civilians, all men, "had gathered in a village to celebrate the return of a tribal elder from the Hajj pilgrimage to Mecca and were reportedly sleeping in a guesthouse of the elder when the airstrike occurred. Civilian victims of the strike included students and a teacher, as well as members of families considered to be pro-government." In addition to those killed, 13 people including at least one boy were injured in the strike.