Coast Guard ships and planes are searching the Gulf of Mexico for a woman believed to have fallen overboard from a cruise ship 10 hours after it left Galveston. Officials say that after 33-year-old Samantha Broberg was reported missing on the Carnival Liberty, a ship-wide search was carried out. A review of security camera footage found that she had apparently fallen off the ship at around 2am Friday, KHOU reports. "Authorities were notified, including the US Coast Guard, which is initiating a search effort in the area where the ship was located when the individual was last seen," Carnival said in a statement. "We are keeping our guest and her loved ones in our thoughts during this difficult time." The cruise ship left Texas on Thursday for a four-day cruise to Cozumel, Mexico, reports the Dallas Morning News. (More cruise ships stories.)