The search for the body of out German pop singer Daniel Küblböck has officially been called off.

33-year-old Küblböck, who rose to fame after coming in third Pop Idol, a spinoff of American Idol, was traveling alone on an Aida cruise ship bound from Hamburg to New York when an eyewitness says he leaped from a fifth floor balcony while off the coast of Newfoundland on Sunday.

In a statement released yesterday, an Aida Cruises spokesman confirmed what happened:

The cruise ship AIDAluna was on the sea route to Newfoundland when a person jumped overboard in the early hours of September 9, 2018. The captain and crew of AIDAluna have immediately taken all necessary rescue measures, in close coordination with the local competent authorities. A cabin check was performed, which confirmed that a male guest was missing. The missing person is Daniel Kaiser-Küblböck. The ship was stopped as a precautionary measure and returned to the spot where the incident was accepted. The search continues. AIDA Cruises fully cooperates with the authorities and works hard to find the missing person. As soon as further information is available, we will make it available.

Canadian coast guard airplanes and helicopters conducted an intensive search for Küblböck but were unable to locate him in the water.

The BBC now reports the search has been called off “given the short survivability time due to the temperature of the water at this time of year.”

Küblböck’s father told media that he was still clinging “to the hope that somehow still everything will be fine.” Meanwhile, Aida Cruises said on Twitter that “our thoughts with the family of the missing.”

Last month, Küblböck posted a cryptic message to fans on Facebook talking about his struggles with mental illness.

“Dear fans, unfortunately I am still mentally and physically not getting better,” the letter, which has since been deleted read. “I have yet to cope with this pain of the last few months.”

Related: Gay pop singer leaps to his death from cruise ship after posting cryptic message on Facebook

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