A 16-year-old boy has been charged with murder and aggravated sexual abuse following the death of his 18-year-old stepsister aboard a Carnival Cruise Line ship in Florida.

<img alt="A file photo from Aug. 1, 2021, showing a side view of the Carnival Horizon cruise ship" height="349" src="https://i.cbc.ca/ais/27e59264-7268-4642-b4f6-5588339dbdc3,1776107937409/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C123%2C3507%2C1972%29%3BResize%3D%28620%29" title="The Carnival Horizon cruise ship is seen moored in the Port of Miami on August 1, 2021. (Photo by Daniel SLIM / AFP) (Photo by DANIEL SLIM/AFP via Getty Images)" width="620" /><p>A 16-year-old boy has been charged ...