The death of a Florida teenager on a Carnival cruise ship earlier this month has been ruled a homicide. Anna Kepner’s cause of death was “mechanical asphyxia,” according to a copy of her death certificate obtained by ABC News. The case has drawn international attention and sparked intense speculation on social media. Mechanical asphyxia is when an object or physical force stops someone from breathing. The case remains shrouded in mystery, with authorities providing little information. Kepner’s 16-year-old stepbrother has been identified as a suspect, according to court filings in a separate custody dispute.
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