Police find no trace of missing woman on sunken sub

Kim Wall was reporting on the vessel that was built from an old wind turbine

That same day, Madsen was ordered jailed after prosecutor Louise Pedersen filed preliminary charges against him "for having killed in an unknown way and in an unknown place Kim Isabell Frerika Wall. sometime after Thursday 5 p.m".

The submarine's Danish inventor, Peter Madsen, is being held on suspicion of manslaughter in Wall's disappearance.

The submarine, the UC3 Nautilus, is one of three constructed by Madsen. Once back on shore, he told Danish television station TV2 that the sub sank after "a minor problem turned into a major issue".

Isbak described the scene further to the AP, saying “there was then some kind of air flow coming up and the submarine started to sink.” Madsen stayed in the tower until water began pouring into it.

Early Friday, the Danish defense had announced the search for the submarine Nautilus, the largest submersible craft in the world (18 m) at the time of its launch nine years ago, which had disappeared the previous evening in the strait of Öresund between Denmark and Sweden, with two people aboard.

Police technicians prepare to enter the Nautilus after it was salvaged at the weekend.

Police said Swedish journalist Kim Wall, 30, was still missing after taking a ride on Peter Madsen's home-made 17-metre sub, which sank on Friday morning.

He told another reporter that he was "out on a rehearsal trip, tinkering with different things in the submarine". The ballast tank is a compartment that holds water to provide stability.

Kim Wall was last seen on Thursday. I couldn't close the hatch or anything.

The worker said that he saw the vessel nearly collide with a much larger merchant ship at around midnight.

"There was very almost a collision", the anonymous witness told the newspaper.

"The u-boat crossed the waterway, just 30 meters away from us".

Wall's family declined to speak in detail about her disappearance.

Thursday 7pm: The submarine, crewed by its owner Peter Madsen and a Swedish journalist, sails from the Refshaleøen island harbour near Copenhagen.

She lived in New York and Peking, her family said, and had written for The New York Times, The Guardian, the South China Morning Post and Vice Magazine, among other publications.

Wall, who lives between NY and Beijing and has also written for Vice and the South China Morning Post, specialises in stories about "identity, gender, pop-culture, social justice, foreign policy and the undercurrents of rebellion", according to her LinkedIn page.

Meanwhile, the search has been expanded to the waters in which the Nautilus was sunk.

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