“Secondary explosives placed by ISIS fighters in a large compound struck by U.S. aircraft in the Jadidah district of Mosul, Iraq, March 17, resulted in the deaths of 105 civilians, with a further 36 civilians unaccounted for, according to a formal investigation led by Air Force Gen. Matthew Isler.”
Source: U.S. military: ISIS largely to blame for deadly March 17 airstrike in Mosul