Tribe sues federal officer after K-9 latches onto man A civil complaint seeks to ban the Bureau of Indian Affairs officer from the Crow reservation Author: A civil complaint seeks to ban the Bureau of Indian Affairs officer from the Crow reservation Matthew Brown Associated Press BILLINGS, Mont. — A prosecutor for the Crow Tribe accused a federal law enforcement officer of aggravated assault and other offenses after the officer's police dog allegedly caused extensive injuries to a tribal member during a traffic stop. A civil complaint from prosecutor David Sibley seeks to ban the Bureau of Indian Affairs officer from the Crow reservation in southeastern Montana over the July 20 incident in Lodge Grass.