But Colonel Pappas , testifying under a grant of immunity , said the Army lacked clear rules for using dogs in interrogations at Abu Ghraib , and he took the blame for mistakenly authorizing the use of muzzled dogs inside interrogation booths when only the top commander in Iraq could have approved that step .
Iraq /location/location/contains Abu Ghraib
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Iraq
LOCATION
Abu Ghraib
PERSON
/location/location/contains