A former sergeant in the K-9 Unit of the Iberia Parish Sheriff’s Office pleaded guilty Wednesday to assaulting a pre-trial detainee at the Iberia Parish Jail by commanding his police dog to bite the detainee, and by striking the detainee, all without justification, according to U.S. attorneys for the Western District of Louisiana.

David Prejean, 38, of Lafayette, had served in the Sheriff's Office specialized IMPACT Unit.

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