Cincinnati Police officers who use their TASER X26 must now aim for a subject's back under the agency's new policy announced Tuesday by Chief James Craig.

Officers must only deploy the TASER in self-defense of in defense of someone else, Chief Craig said. And once officers decide to use their TASER, they must try to avoid a frontal hit.

The changes were made following a study in the American Heart Association's Circulation journal concluding that a shock from the TASER "can cause cardiac electric capture and provoke cardiac arrest" as a result of an abnormally rapid heart rate and uncontrolled, fluttering contractions, reports


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