A company statement for the Norwegian cruise ship called Epic, has confirmed that an unidentified 21-year-old man on board suffered a heart attack and died when the ship was about 40 miles from Miami. The heart attack was possibly caused by a fatal allergic reaction.

Shocked passengers on board the 1,080-foot-long Epic, Norwegian Cruise Line’s newest ship based at the port and big enough for 4,100 guests used online social websites and forums to spread the news of the tragedy, which occurred late Saturday night. One guest said that a CODE ALPHA was called to a cabin on deck 11. Then 3 guests were paged 15 minutes later to call 00 or go to customer service immediately, the guest recalled. The cruise director said that they were returning to Miami for a medical emergency about 15 minutes later.

The Epic docked at 12:45 a.m. and was met by Miami-Dade police investigators. The ship returned to sea at approximately 2:45 a.m. The rest of the ship’s travel plan won’t be affected by this delay, and Norwegian Epic will call in St. Maarten on Monday as planned.