The family of Anna Kepner , the high school senior whose younger stepbrother is now suspected in her recent death aboard a Carnival cruise, is breaking their silence on the tragic situation.

Paternal grandmother Barbara Kepner told ABC News that the body of the 18-year-old cheerleader was found earlier this month, “concealed under the bed” in the Carnival Horizon stateroom she was sharing with the minor suspect and her biological brother.

Anna “was mechanically asphyxiated by other person(s),” according to the death certificate issued Monday and provided to the outlet by her family. Official autopsy and toxicology results are still pending, though there are no apparent signs of sexual assault.

“They were just like brother and sister,” Barbara said of the reported suspect, with

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