Anna Kepner and Her 16-Year-Old Stepbrother Were Like '2 Peas in a Pod,' According to Grandmother

NEED TO KNOW

Grandparents of Anna Kepner are speaking out, shedding light on the blended family

Kepner was found dead under her bed on a Caribbean cruise earlier this month

No suspects have been announced by investigators

The grandparents of Anna Kepner , the 18-year-old cheerleader found dead aboard a cruise while on a family holiday, say that the teen was very close with her 16-year-old stepbrother, who is now a possible suspect in the case.

The 16-year-old boy has not been named a suspect by the FBI, which previously confirmed to PEOPLE it is investigating the case.

Kepner, of Titusville, Fla., was found dead on the Carnival Horizon cruise ship on Nov. 8 by a member of the ship's housekeeping staff.

No suspects have been publicly named.

However, in court filings related