sentences:  Before 21 May, Iraqi forces rounded up 250 people as part of the search, 15 of them were processed into U.S. detention facilities, the rest into Iraqi detention.At a not specified moment, Islamic State of Iraq (ISI) called on the U.S. military to halt its search for the missing soldiers.On 23 May, Anzack's body was pulled out of the Euphrates River, with a gunshot wound in the head.