Anna Kepner, the Florida 18-year-old who died aboard a Carnival cruise ship earlier this month, has been cremated, according to a copy of her death certificate obtained by Fox News.

The public document does not include her cause or manner of death, which is only given on the version of the death certificate supplied to her immediate family under Florida law. The Miami-Dade Medical Examiner's Office declined to comment, citing the ongoing investigation.

The FBI's Miami office is handling the investigation into Kepner's death, which her family said has been ruled a homicide by mechanical asphyxiation in an interview with found under her bed, wrapped in a blanket and covered in life jackets in a cabin she shared with her stepbrother.

There have been no publicly announced criminal charges in the case, and the FBI has not identified anyone as a suspect.

However, according to court documents from a bitter custody battle between the stepbrother's parents, the 16-year-old is an apparent subject of the FBI's investigation.