The search for an Australian couple who went missing during a cruise trip on the Carnival Spirit has been called off according to Australian police.

Video surveillance footage from the ship's CCTV cameras shows a young woman, presumed to be Kristen Schroder, a real estate agent from New South Wales, jumping from the railing of the Carnival Cruise ship Wednesday night.

The footage later reveals a man presumed to be Paul Rossington, Schroder's boyfriend, jumping from the rail 20 seconds later in what is believe to be an attempt to rescue Schroder, police in New South Whales told the Herald Sun.

Earlier police reports say that no life preservers were missing from the ship. A missing life preserver might have indicated that Rossington attempted a rescue, notes the Associated Press.

The couple are now presumed dead after 48 hours of land and sea searches failed to turn up any results, according to USA Today on Friday.

Police have also ruled out an accidental death, according to the Australian. Law enforcement officials are now focusing their efforts to find out why the two might have jump from mid-deck into the sea.

"What [the footage] did was tell us two people went into the water and that's about as far as we can take it," Detective Superintendent Mark Hutchings, told the Sydney Morning Herald.

The couple was discovered missing Thursday morning after the Carnival Spirit docked at Sydney's Circular Quay after completing its 10-day journey. It's believed that none of the 2,680 people on board the Spirit witnessed the incident.

Carnival Cruises says that railings on board the Spirit were taller than industry standards with the intention of preventing accidental falls, a spokesperson for Carnival Cruises told the Associated Press.

Rossington and Schroder are the fourth people to go overboard on a cruise ship this year, according to the International Business Times. Back in March, a passenger went overboard while sailing on the Coral Princess and with another incident on board MSC Cruises’ Fantasia in February according to Dr. Ross Klein of CruiseJunkie.com.

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  • The sun sets as the cruise ship Carnival Triumph is towed into Mobile Bay near Dauphin Island, Ala., Thursday, Feb. 14, 2013. (AP Photo/Dave Martin)

  • The cruise ship Carnival Triumph is towed up the Mobile River in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/Dave Martin)

  • The cruise ship Carnival Triumph is pushed towards the cruise terminal along the Mobile River in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/Dave Martin)

  • The cruise ship Carnival Triumph is towed up the Mobile River in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/Dave Martin)

  • People watch from their balconies aboard the Carnival Triumph after it was towed to the cruise terminal in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/G M Andrews)

  • People watch from their balconies aboard the Carnival Triumph after it was towed to the cruise terminal in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/John David Mercer)

  • Passengers aboard the Carnival Triumph walk along the deck before leaving the ship in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/Dave Martin)

  • Carnival Triumph Arrives

    People watch from their balconies and hold up signs aboard the Carnival Triumph after it was towed to the cruise terminal in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/AL.com, Mike Brantley)

  • Passengers of the Carnival Triumph walk to their buses after docking at the cruise terminal in Mobile, Ala., Thursday, Feb. 14, 2013. (AP Photo/Dave Martin)

  • Passengers from the disabled Carnival Triumph cruise ship arrive by bus at the Hilton Riverside Hotel in New Orleans, Friday, Feb. 15, 2013. (AP Photo/Gerald Herbert)

  • Passengers from the disabled Carnival Triumph cruise ship arrive by bus at the Hilton Riverside Hotel in New Orleans, Friday, Feb. 15, 2013. (AP Photo/Gerald Herbert)

  • This undated photo provided by passenger Don Hoggatt, of Dallas, shows makeshift tents on the deck of the Carnival Triumph cruise ship for people to spend the day in and sleep in to escape the stench from the lower decks of the disabled ship.The Triumph arrived late Thursday, Feb. 14, 2013, in Mobile, Ala., after an engine-room fire left the ship powerless off Mexico last weekend. (AP Photo/Don Hoggatt)

  • This undated photo provided by passenger Don Hoggatt, of Dallas, shows the tent city built on the Lido deck of the Carnival Triumph cruise ship for people to spend the day or night in to escape the stench from the lower decks of the disabled ship. The Triumph arrived late Thursday, Feb. 14, 2013, in Mobile, Ala., after an engine-room fire left the ship powerless off Mexico last weekend. (AP Photo/Don Hoggatt)

  • This undated photo provided by passenger Don Hoggatt, of Dallas, shows covered urinals and bagged trash cans for passengers to use in one of the bathrooms aboard the Carnival Triumph cruise ship which became disabled after an engine-room fire left the ship powerless off Mexico last weekend. The Triumph arrived late Thursday, Feb. 14, 2013, in Mobile, Ala., after an engine-room fire left the ship powerless off Mexico last weekend. (AP Photo/Don Hoggatt)

  • The cruise ship Carnival Triumph is moored at a dock in Mobile, Ala., Friday, Feb. 15, 2013. The ship, which docked Thursday in Mobile after drifting nearly powerless in the Gulf of Mexico for five days, was moved Friday from the cruise terminal to a repair facility. (AP Photo/Dave Martin)

  • In this image released by the U.S. Coast Guard on Feb. 11, 2013, a small boat belonging to the Coast Guard Cutter Vigorous patrols near the cruise ship Carnival Triumph in the Gulf of Mexico, Feb. 11, 2013. (AP Photo/U.S. Coast Guard- Lt. Cmdr. Paul McConnell)

  • In a Feb. 12, 2013 photo provided by the U.S. Coast Guard, the tugs Resolve Pioneer and Dabhol, left, tow and steer the 893-foot Carnival Triumph cruise ship in the Gulf of Mexico. (AP Photo/U.S. Coast Guard, Ensign Chris Shivock)

  • In this image released by the U.S. Coast Guard on Feb. 11, 2013, the Coast Guard Cutter Vigorous patrols near the cruise ship Carnival Triumph in the Gulf of Mexico, Feb. 11, 2013. T(AP Photo/U.S. Coast Guard- Lt. Cmdr. Paul McConnell)

  • This July 27, 1999 handout file photo provided by Carnival Cruise Lines shows the MS Carnival Triumph departing New York harbor, on her inaugural voyage. Carnival Cruise Lines said Sunday an engine room fire had disabled the cruise ship Triumph about 150 miles off the Yucatan Peninsula with 3,143 passengers and 1,086 crew members on board. (AP Photo/Carnival Lines, Andy Newman, File)

  • Cruise Ship Loses Power In Gulf Of Mexico

    In this handout from the U.S. Coast Guard, the cruise ship Carnival Triumph sits idle February 11, 2013 in the Gulf of Mexico. (Photo by Paul McConnell/U.S. Coast Guard via Getty Images)