The incident left six guests injured and resulted in a portion of one of the cruise ship's decks crushed, after which Carnival Cruise Line issued a formal apology and initial statement of what is believed to have happened later in day on Friday. The six were treated at a nearby hospital for what were reported as minor injuries. 

Carnival described the incident as an 'allision' between the two ships, which is a nautical term denoting a ship colliding with a stationary object. The Carnival Glory was "maneuvering to dock" when it hit the already docked Carnival Legend, according to the company statement. 

Though an investigation is said to be ongoing, the company currently believes the allision was due to "spontaneous wind gusts and strong currents."

Captain Pero Grubjesic issued a letter to all cruise line guests — most of which were ashore during the accident. It began, "Dear Carnival Glory Guest, Welcome back from your day ashore. We hope you enjoyed your time in Cozumel."

"A formal investigation is underway to confirm the cause of the accident, which we believe was due to spontaneous wind gusts and strong currents. The ship has been inspected by the required authorities and there are no issues that impact our ability to sail safely back to New Orleans."