Authorities have launched a search for a 72-year-old man believed to have gone overboard from a Princess Cruise ship ahead of its Monday arrival in San Francisco.

Princess Cruises officials believe a 72-year-old man went overboard on Monday before the Ruby Princess cruise docked in San Francisco. “Princess Cruises is saddened to report that a 72-year-old American male is believed to have gone overboard earlier today ahead of the arrival of Ruby Princess into San Francisco,

An elderly male passenger is now reported missing from Ruby Princess but the exact location of the incident is unknown.

When the ship returned to California from Mexico, one passenger was no longer aboard the Princess Cruise ship.

A 72-year-old American man traveling on a Princess Cruise ship mysteriously vanished from the boat, prompting officials to believe he fell overboard at some point during the five-day voyage around Mexico.