CNN  — 

The search for a missing cruise ship passenger in the Gulf of Mexico has been suspended, the Coast Guard said in a statement.

Samantha Broberg’s travel companions reported the 33-year-old missing from the Carnival Liberty cruise ship on Friday, the cruise line said. The Carnival Liberty left Galveston, Texas, on Thursday on a four-day cruise of Mexico.

Samantha Broberg

Surveillance video indicates she fell overboard from the 10th deck early Friday morning. The footage suggests she was sitting on a deck railing and fell backwards into the water, Carnival said.

Planes spent 20 hours searching for Broberg in an area of more than 4,300 square miles before suspending search efforts on Sunday night.

Coast Guard Petty Officer Andy Kendrick told CNN Saturday that the search area’s distance from shore was complicating search efforts.

“The search area is so offshore, almost 200 miles southeast of Galveston, so it’s way out there and very difficult to get to and get any resources out to it,” he said.

Neither the U.S. Department of Transportation nor the U.S. Coast Guard specifically track incidents of passengers going overboard from cruise ships.

But CruiseJunkie.com, which does compile such statistics, said four people, including Broberg, have fallen off cruise ships in 2016. Last year, 27 people fell off ships, according to the site.

Those incidents include a woman who went overboard during a cruise ship dance party off Cuba, a 22-year-old man rescued after five hours in the water, and a Canadian man believed to have jumped from a cruise ship near Puerto Rico.

CNN’s Carma Hassan, Keith Allen and Artemis Moshtaghian contributed to this report