GALVESTON, Texas - On Monday, investigators were looking into how a 24-year-old crew member went missing over the weekend from a Royal Caribbean cruise ship that sailed from Galveston.

An unidentified pool attendant aboard Vision of the Seas did not report to work as scheduled on Friday, said Owen Torres, a spokesman for Royal Caribbean.

“The U.S. Coast Guard was notified and a ship-wide search for the crew member was conducted,” Torres said.

Security footage showed the man from Mauritius, a small island off the east coast of Madagascar, entering a deck area about 6:14 p.m. Thursday. He did not return, however, Torres said.

A Houston passenger who was on board the cruise ship told KHOU 11 on Wednesday she does not believe this was an accident.

“In my opinion, it would have been highly unlikely that he accidentally went overboard,” said passenger Daina Nichols. “The rails are high enough, it was calm seas when he went missing.”

Nichols was on the cruise for her honeymoon and said things were fine until the last day of the voyage when the captain made an announcement.

“They made the announcement that a crew member was unaccounted for,” Nichols said. “He was last seen at five in the morning, entering an area on the pool deck that didn’t include the closed-circuit television and that he didn’t report to his training shift at seven.”

Royal Caribbean would not identify the missing crew member and would not respond to KHOU 11’s questions concerning any investigation into the disappearance.

The U.S. Coast Guard told KHOU 11 Wednesday they were contacted by Royal Caribbean after the incident and took their report.

A USCG official says they did not have jurisdiction at the location the incident happened in the Gulf of Mexico and therefore relayed the information to the Mexican Navy.

This story is a result of our partnership with the Galveston County Daily News. Tap here to read more.