Man drowns as underwater marriage proposal goes horribly wrong

Steven Weber and his girlfriend, Kenesha Antoine, were staying in luxury submerged cabin in Tanzania

An American national drowned while proposing to his girlfriend underwater during a "once-in-a-lifetime" trip to Tanzania.

According to BBC, Steven Weber and his girlfriend, Kenesha Antoine, were staying in a luxury submerged cabin at the Manta Resort, off Pemba Island.

Antoine filmed the moment Weber, wearing goggles and flippers, dived under water to ask her to marry him.

In the video, Weber presses a hand-written note against the cabin window.

PHOTO: BBC

Antoine, confirming Weber's death in a Facebook post, said he "never emerged from those depths".

The Manta Resort said the victim "tragically drowned while free diving alone outside the underwater room."

"It is with the deepest regret that we inform that a fatal accident occurred at The Manta Resort on Thursday 19 September, 2019," the resort said in a statement.

Matthew Saus, CEO of the resort, said "everyone is shaken to the core" by the death.

Weber and Antoine had booked four nights at the resort's underwater room, which lies approximately 250m (820ft) from the shore.

The water where the cabin is anchored is around 10m (32ft) deep.

On the third day of their stay, Weber, from Baton Rouge, Louisiana, plunged into the water to hold his proposal note against the cabin's glass window.

Spanish pop star killed in freak concert firework accident

His note read: "I can't hold my breath long enough to tell you everything I love about you. But… everything I love about you, I love more every day!"

Later in the video, Weber turns over the sheet of paper to reveal the proposal, before pulling an engagement ring from his shorts and swimming out of view.

PHOTO: BBC

Saus said his staff responded to a "problem in the water", but when they arrived "absolutely nothing could be done".

In her Facebook post, Antoine said Weber "never got to hear her answer" to his proposal, which would have been "a million times, yes".

"We never got to embrace and celebrate the beginning of the rest of our lives together, as the best day of our lives turned into the worst, in the cruellest twist of fate imaginable," she wrote.

"I will try to take solace in the fact that we enjoyed the most amazing bucket list experiences these past few days, and that we both were so happy and absolutely giddy with excitement in our final moments together."

The US Department of State said it is aware of the death of a US citizen in Tanzania, in East Africa.

"We offer our sincerest condolences to the family on their loss," a spokesperson said. "We stand ready to provide all appropriate consular assistance."