Search suspended for man overboard on cruise ship hundreds of miles away from Hawaii

The U.S. Coast Guard said Thursday it has suspended its search for a cruise ship passenger from Australia who went overboard a few hundred miles off the coast of Hawaii.

The incident occurred at approximately 11:03 p.m. Tuesday night, when the Joint Rescue Coordination Center Honolulu received a report from the Quantum of the Seas cruise ship that a man had gone overboard about 500 miles south of Kailua Kona, Big Island, according to the Coast Guard.

The cruise ship's crew searched for approximately two hours, deploying six life rings, the Coast Guard said.

A Coast Guard Air Station Barbers Point C-130 Hercules aircrew launched at 7 a.m. on Wednesday morning and arrived on the scene at approximately 9 a.m. but did not have any luck finding the missing man after completing five searches.

The search resumed Thursday morning, before the Coast Guard announced it has suspended the active search later that day.

"After reviewing all relevant information of the case and discussing with our Australian consulate counterparts as well as with the next of kin, the Coast Guard has made the difficult decision to suspend the active search for the passenger aboard the Quantum of the Seas," Kevin Cooper, a search and rescue mission coordinator for the Joint Rescue Coordination Center Honolulu, said in a statement.

Quantum of the Seas departed from Brisbane, Australia, on April 12 and is scheduled to arrive in Honolulu on April 28.

Royal Caribbean -- who operates Quantum of the Seas -- also released a statement on Wednesday confirming the missing passenger.

"While on its trans-pacific sailing, a guest onboard Quantum of the Seas went overboard," Royal Caribbean said. "The ship's crew immediately launched a search and rescue operation and is working closely with local authorities."

Authorities did not give any further details on how the man may have ended up going overboard.

ABC News' Clara McMichael contributed to this report.