Danish submarine inventor Peter Madsen who murdered Swedish journalist Kim Wall loses appeal, retains life sentence

A judge declined Wednesday to overturn the life sentence of Peter Madsen, the Danish submarine inventor who was found guilty of killing a reporter.

Madsen, 47, was convicted of premeditated murder and sexual assault of Swedish journalism Kim Wall, who was writing an article about him last year. While he admitted to throwing her body overboard, Madsen still insists that he did not kill her.

Wall’s headless torso washed ashore in August 2017 and police confirmed through DNA that the body part belonged to the reporter. Her head and legs were discovered almost two months later.

Madsen initially told authorities that he had dropped Wall off in Copenhagen, then changed his story to say she had accidentally died when she hit her head on a heavy hatch cover. During the trial, he blamed a carbon monoxide accident on board his submarine.

Photos from the case: 

19 PHOTOS
Danish inventor charged with killing journalist on his submarine -- Peter Madsen and Kim Wall
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Danish inventor charged with killing journalist on his submarine -- Peter Madsen and Kim Wall
A photo of Swedish journalist Kim Wall who was aboard a submarine "UC3 Nautilus" before it sank. TT NEWS AGENCY/ Tom Wall Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. SWEDEN OUT. NO COMMERCIAL OR EDITORIAL SALES IN SWEDEN. NO COMMERCIAL SALES. MANDATORY CREDIT
Members of the Danish Emergency Management Agency (DEMA) assist police in the search in the Kim Wall case at Kalvebod Faelled in Copenhagen, Denmark, August 23, 2017. Scanpix Denmark/Martin Sylvest/ via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT. NO COMMERCIAL OR EDITORIAL SALES IN DENMARK.
The home-made submarine "UC3 Nautilus", built by Danish inventor Peter Madsen, who is charged with killing Swedish journalist Kim Wall in his submarine, sails in the harbour of Copenhagen, Denmark, August 10, 2017. Picture taken August 10, 2017. REUTERS/Peter Thompson
Danish submarine owner and inventor Peter Madsen lands with the help of the Danish defence in Dragor Harbor south of Copenhagen, Denmark August 11, 2017. Scanpix Denmark/Bax Lindhardt/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT. NO COMMERCIAL OR EDITORIAL SALES IN DENMARK.
The home-made submarine "UC3 Nautilus", built by Danish inventor Peter Madsen, who is charged with killing Swedish journalist Kim Wall in his submarine, sails in the harbour of Copenhagen, Denmark, August 10, 2017. Picture taken August 10, 2017. REUTERS/Peter Thompson
COPENHAGEN, DENMARK - AUGUST 12: A salvage vessel arrives a Copenhagen Harbor with the privately owned and built submarine, Nautilus, which sank near Copenhagen Friday morning, and where the suspected murder of Swedish journalist Kim Wall is assumed to have taken place, on August 12, 2017 in Copenhagen, Denmark. The submarine sailed out of Copenhagen harbor Thursday evening with owner Peter Madsen and Kim Wall onboard. Later the submarine sank in 7 metres of water. Peter Madsen was safely rescued but the Swedish journalist was missing and Madsen was subsequently arrested by the police and charged for murder. Madsen claimed that the woman was put ashore before the submarine sank. Madsen appeared for a preliminary examination at the Copenhagen Court Saturday afternoon. Police are now to investigate the submarine, which is built by Madsen himself. The Swedish journalist is still being searched for by the police. Her identity was released Saturday by her family to Danish broadcaster TV2.(Photo by Ole Jensen - Corbis/Corbis via Getty Images)
Peter Madsen, Danish inventor, engineer, rocket- and u-boat builder, talks about entrepreneurship during Danish Business Day event held in Copenhagen, Denmark, May 9, 2017. Scanpix Denmark/Ida Marie Odgaard/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT. NO COMMERCIAL OR EDITORIAL SALES IN DENMARK.
A unit of the Swedish Sea Rescue Society searches for the missing swedish journalist Kim Wall, at the Lundakra Bay between Barsebaeck and Landskrona on August 15, 2017. The Swedish journalist is missing after a trip with Danish inventor Peder Madsen's DIY submarine Nautilus in Oresund. / AFP PHOTO / TT News Agency / Johan NILSSON / Sweden OUT (Photo credit should read JOHAN NILSSON/AFP/Getty Images)
COPENHAGEN, DENMARK -AUGUST 13: The privately owned submarine, Nautilus, which is the suspected crime scene for the assumed murder on Swedish journalist Kim Wall, arrives to it's destination where further forensic police investigation wil take place near Copenhagen harbor on August 13, 2017 in Copenhagen, Denmark. The submarine sailed out of Copenhagen harbor Thursday evening with owner Peter Madsen and Kim Wall onboard. Later the submarine sank in 8 meters water. Peter Madsen was safely rescued but the Swedish journalist was missing and Madsen was subsequently arrested by the police and charged for murder. Madsen claimed that the woman was put ashore before the submarine sank. Madsen appeared for a preliminary examination at the Copenhagen Court Saturday afternoon. Police are now to investigate the submarine, which is built by Madsen himself. The Swedish journalist is still being searched for by the police. Her identity was released Saturday by her family to Danish broadcaster TV2.(Photo by Ole Jensen - Corbis/Corbis via Getty Images)
COPENHAGEN, DENMARK -AUGUST 13: Police begin their forensic investigation work on the privately owned submarine, Nautilus, which is the suspected crime scene for the assumed murder on Swedish journalist Kim Wall on August 13, 2017 in Copenhagen, Denmark. The submarine sailed out of Copenhagen harbor Thursday evening with owner Peter Madsen and Kim Wall onboard. Later the submarine sank in 8 meters water. Peter Madsen was safely rescued but the Swedish journalist was missing and Madsen was subsequently arrested by the police and charged for murder. Madsen claimed that the woman was put ashore before the submarine sank. Madsen appeared for a preliminary examination at the Copenhagen Court Saturday afternoon. Police are now to investigate the submarine, which is built by Madsen himself. The Swedish journalist is still being searched for by the police. Her identity was released Saturday by her family to Danish broadcaster TV2.(Photo by Ole Jensen - Corbis/Corbis via Getty Images)
Danish submarine owner and inventor Peter Madsen lands with the help of the Danish defence in Dragor Harbor south of Copenhagen, Denmark August 11, 2017. Picture taken August 11, 2017. Scanpix Denmark/Bax Lindhardt/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT.
COPENHAGEN, DENMARK -AUGUST 13: The privately owned submarine, Nautilus, which is the suspected crime scene for the assumed murder on Swedish journalist Kim Wall, is carried out of Copenhagen harbor on a truck for further forensic police investigation taking place near the harbor on August 13, 2017 in Copenhagen, Denmark. The submarine sailed out of Copenhagen harbor Thursday evening with owner Peter Madsen and Kim Wall onboard. Later the submarine sank in 8 meters water. Peter Madsen was safely rescued but the Swedish journalist was missing and Madsen was subsequently arrested by the police and charged for murder. Madsen claimed that the woman was put ashore before the submarine sank. Madsen appeared for a preliminary examination at the Copenhagen Court Saturday afternoon. Police are now to investigate the submarine, which is built by Madsen himself. The Swedish journalist is still being searched for by the police. Her identity was released Saturday by her family to Danish broadcaster TV2.(Photo by Ole Jensen - Corbis/Corbis via Getty Images)
COPENHAGEN, DENMARK -AUGUST 13: The privately owned submarine, Nautilus, which is the suspected crime scene for the assumed murder on Swedish journalist Kim Wall, is carried out of Copenhagen harbor on a truck for further forensic police investigation taking place near the harbor on August 13, 2017 in Copenhagen, Denmark. The submarine sailed out of Copenhagen harbor Thursday evening with owner Peter Madsen and Kim Wall onboard. Later the submarine sank in 8 meters water. Peter Madsen was safely rescued but the Swedish journalist was missing and Madsen was subsequently arrested by the police and charged for murder. Madsen claimed that the woman was put ashore before the submarine sank. Madsen appeared for a preliminary examination at the Copenhagen Court Saturday afternoon. Police are now to investigate the submarine, which is built by Madsen himself. The Swedish journalist is still being searched for by the police. Her identity was released Saturday by her family to Danish broadcaster TV2.(Photo by Ole Jensen - Corbis/Corbis via Getty Images)
COPENHAGEN, DENMARK -AUGUST 13: The privately owned submarine, Nautilus, which is the suspected crime scene for the assumed murder on Swedish journalist Kim Wall, arrives to it's destination where further forensic police investigation wil take place near Copenhagen harbor on August 13, 2017 in Copenhagen, Denmark. The submarine sailed out of Copenhagen harbor Thursday evening with owner Peter Madsen and Kim Wall onboard. Later the submarine sank in 8 meters water. Peter Madsen was safely rescued but the Swedish journalist was missing and Madsen was subsequently arrested by the police and charged for murder. Madsen claimed that the woman was put ashore before the submarine sank. Madsen appeared for a preliminary examination at the Copenhagen Court Saturday afternoon. Police are now to investigate the submarine, which is built by Madsen himself. The Swedish journalist is still being searched for by the police. Her identity was released Saturday by her family to Danish broadcaster TV2.(Photo by Ole Jensen - Corbis/Corbis via Getty Images)
A unit of the Swedish Sea Rescue Society searches for the missing swedish journalist, Kim Wall, at the Lundakra Bay, between Barsebaeck and Landskrona, on August 15, 2017. The Swedish journalist is missing after a trip with Danish inventor Peder Madsen's DIY submarine Nautilus in Oresund. / AFP PHOTO / TT News Agency / Johan NILSSON / Sweden OUT (Photo credit should read JOHAN NILSSON/AFP/Getty Images)
Members of the Danish Emergency Management Agency (DEMA) (Danish: Beredskabsstyrelsen) assist police at Kalvebod Faelled in search of missing body parts of journalist Kim Wall close to the site where her torso was found, in Copenhagen, Denmark, August 23, 2017. Scanpix Denmark/Martin Sylvest/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT.
Members of the Danish Emergency Management Agency (DEMA) (Danish: Beredskabsstyrelsen) assist police at Kalvebod Faelled in Copenhagen on August 23 2017 in search of missing bodyparts of journalist Kim Wall close to the site where her torso was found on Monday, August 21. Scanpix Denmark/Martin Sylvest/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT.
Members of the Danish Emergency Management Agency (DEMA) (Danish: Beredskabsstyrelsen) assist police at Kalvebod Faelled in search of missing body parts of journalist Kim Wall close to the site where her torso was found, in Copenhagen, Denmark, August 23, 2017. Scanpix Denmark/Martin Sylvest/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT.
Members of the Danish Emergency Management Agency (DEMA) (Danish: Beredskabsstyrelsen) assist police at Kalvebod Faelled in Copenhagen on August 23 2017 in search of missing bodyparts of journalist Kim Wall close to the site where her torso was found on Monday, August 21. Scanpix Denmark/Martin Sylvest/via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. DENMARK OUT.
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On the stand in April, Madsen admitted to stabbing Wall in the head, but said that happened after she was already dead and that he was trying to get the gas out of her body so she would sink into the water.

"I pierced certain parts of her body because I did not want them to be inflated by gas," he said. “There was nothing erotic in those blows."

Prosecutors also claim that the murder was premeditated as part of a sick sexual fantasy, pointing to videos found on Madsen’s computer of beheadings and impalements.

There is still no official cause for the 30-year-old reporter, who had attended Columbia University, although prosecutors have speculated she died either by strangulation or by having her throat slit.

"I'm terribly sorry to Kim's relatives for what happened," Madsen said to her parents, who were in the courtroom Tuesday.

In Denmark, a life sentence lasts an average of 16 years, although it can be extended.

With News Wire Services.

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