Passengers on the ship told said they woke up to the sound of sirens at around 3 or 4 a.m. Wednesday, and one heard a request for medical assistance on one of its decks, according to KHOU.

The FBI’s Houston field office is “aware of an incident” that took place around July 23 aboard the Carnival Dream, the agency said.

The FBI is investigating the death of Euvelester Villarreal Jr., a 48-year-old Texas man, aboard a Carnival Cruise Line ship on July 23, 2025, though the cruise line states the review is standard procedure and does not imply suspicious circumstances.