Instagram / @anna.kepner16

The stepbrother of Anna Kepner -- the teen girl who tragically died on the Carnival Horizon last month -- has been sent to live with relatives as the FBI investigates him in connection with Anna's death.

According to People , Anna's stepmother, Shauntel Kepner , who is the 16-year-old boy's biological mother, made the decision along with her husband -- Anna's biological father -- Christopher Kepner . The move was intended to remove any risk of danger to the other children in their home.

Shauntel reportedly revealed this information Friday during a custody hearing. The court appearance stemmed from Shantel's ex-husband, Thomas Hudson , reportedly filing an emergency custody motion requesting that a judge grant him custody of their youngest daughte

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