The 24-year-old American tourist died Monday in a Cancun hospital from internal bleeding after ingesting a safety pin that punctured her organs, said Francisco Alor Quezada, state prosecutor in Quintana Roo, where both resorts are located.
The prosecutor's office gave two different names for the woman and no other information on where she was from. Alor said an autopsy found she suffered from diabetes, had a brain tumor and was taking anti-anxiety medication.
Royal Caribbean spokeswoman Michele Nadeem said in a statement that the tourist debarked Friday and didn't return to the ship before departure.
Nadeem said the woman was admitted to a hospital to receive medical attention. She added that "out of respect for patient confidentiality, we cannot discuss her medical situation with the media, nor can we release personal information until her next of kin is contacted."
Alor said the death had nothing to do with the case of Monika Markiewicz, 32, whose body was recovered Saturday from the sea off Cozumel. The Polish national was a musician on the cruise ship, Allure of the Sea.
He said the ship's staff was working with investigators and reviewing on-board surveillance videos to help find out what happened to Markiewicz.
An autopsy determined she drowned but also had suffered a blow to the head, leading cruise officials to say she was the victim of a violent crime.
Alor said Tuesday that he could not yet confirm whether a crime took place.