murder Florida The case of Anna Kepner, a teenager on a Carnival cruise ship off the coast of Miami, took a critical turn Monday after the U.S. Department of Justice announced charges against Kepner’s 16-year-old half-brother.
The 16-year-old’s arrest was expected by many, following earlier news that the FBI considered him a prime suspect. But as accusations against Kepner’s stepbrother are revealed Ministry of Justicea few key details stand out.
Kepner is accused of sexually assaulting and intentionally killing 18-year-old Anna Kepner on a Carnival Horizon cruise ship on November 6, 2025, the U.S. Department of Justice said. Anna, her father Chris Kepner, stepmother Shortell Kepner and her stepbrother were on the boat when she was killed.
The U.S. Department of Justice charged 16-year-old Anna Kepner with “sexual assault and intentional murder.” The official cause of death was mechanical asphyxiation. On November 8, cleaning staff found her body hidden under the bed, still wearing a life jacket.
Also read: About Anna Kepner’s family: father, mother, stepmother and siblings
Stepbrother to be tried as adults
Crucially, however, it was revealed that Anna Kepner’s stepbrother will be treated as an adult despite being initially charged as a teenager. Additionally, it was revealed that the case will continue to be heard by the Department of Justice. FBIAs one former FBI agent pointed out, this is a rare thing.
Retired FBI agent Jennifer Coffindaffer noted on X that cases in U.S. waters are referred to the FBI. But once charges are filed, they are handed over to local authorities. But the reasons for the FBI’s decision departed from that tradition.
Former FBI agent dissects key details; ‘It’s so rare’
Jennifer Coffendaver said it was the sexual assault allegations in the case that led the FBI to escalate and keep the case instead of handing it over to the local sheriff’s department, as is customary in federal jurisdictions with juvenile cases.
"We have a federal indictment," She said X live broadcast. “Anything that happens on a plane, ship or train is under the jurisdiction of the FBI.”
“In this case, because this person is a juvenile, it creates a big problem for the FBI because we don’t have a way to deal with it teenager: There is no juvenile system or juvenile detention center. “
“So one of two things has to happen: Either it’s turned over to a local jurisdiction or it has to be elevated from a juvenile case to an adult case.”
“It’s very rare,” she continued. “The only time I’ve seen this happen is in a retention case. You don’t see it in a federal case. So, it was a huge event. Here’s how it happened: The indictment said she had been sexually assaulted.
