Image copyright AFP Image caption Kim Wall went missing after boarding Peter Madsen's submarine 
 
 The Danish inventor Peter Madsen has admitted dismembering the body of Swedish journalist Kim Wall aboard his submarine, but denies killing her. 
 
 Danish police said in a statement that he also admitted dumping her body parts in the sea. 
 
 He told police she had died in August from carbon monoxide poisoning inside the submarine, while he was up on deck. 
 
 Mr Madsen had previously denied cutting up her body and said she died when a heavy submarine hatch fell on her head. 
 
 Divers found bags containing her head, legs and clothing in Koge Bay, just south of Copenhagen, earlier this month. Police said they had been weighed down with pieces of metal. 
 
 Ms Wall's torso was found on 21 August. A post-mortem examination revealed knife wounds to her genitals and ribcage, which were believed to have been caused "around or shortly after her death". 
 
 Police said on Monday they were extending the charges against Mr Madsen - which already include murder and mutilating Ms Wall's body - to include sexual assault without intercourse. The inventor denies the charges against him. 
 
 Ms Wall, 30, was last seen alive on the evening of 10 August as she departed with Mr Madsen on his self-built 40-tonne submarine, UC3 Nautilus, for a story she was writing about his venture. 
 
 Her boyfriend raised the alarm the next day when she did not return from the trip. 
 
 Initially, Mr Madsen said he had dropped her off safely in Copenhagen, but the 46-year-old later changed his story to say there had been a "terrible accident", that he had "buried her at sea" and planned afterwards to take his own life by sinking his submarine. 
 
 Image copyright AFP Image caption Peter Madsen denies the murder and sexual assault charges 
 
 Danish Prosecutor Jakob Buch-Jepsen told a court earlier this month that footage of women being decapitated alive had been found on a hard drive believed to belong to Mr Madsen. Mr Madsen said the hard drive was not his. 
 
 The inventor was supposed to appear in court on Tuesday but will now remain in custody until 15 November. ||||| Copenhagen, Denmark (CNN) Divers have found the head and legs of Swedish journalist Kim Wall, Danish police said Saturday at a news conference. 
 
 The freelance journalist went missing after boarding a privately built submarine with its Danish inventor, Peter Madsen, on August 10. She was working on a story. 
 
 Madsen is accused of killing Wall. He denies the allegation and has called her death an accident. 
 
 The police conducted an autopsy on Wall's head and found no sign of cranium fracture or violence, said Jens Moeller Jensen, who is leading the murder investigation for Copenhagen police. Identification was based on dental records from Sweden, he said. 
 
 "We found a bag with Kim Wall's clothing; shirt, skirt, socks and shoes, and also a knife and lead pieces weighing them down," Moeller Jensen said. "Around noon we found a leg, then another leg, and shortly thereafter we found a head, also in a bag weighted down by several metal pieces." 
 
 The submarine dove for several hours overnight from August 10 to 11, during which time police believe Wall's body was cut to pieces, Moeller Jensen said. 
 
 Officers search for missing body parts of Swedish journalist Kim Wall on August 23, close to the site where her torso was found two days earlier. 
 
 Divers continued to search Koege Bay on Saturday for the journalist's arms. 
 
 Police were still working to determine Wall's cause of death, Moeller Jensen said, adding that investigators were focusing on her neck and throat area. 
 
 Wall's headless torso washed up on August 21 on an island near Copenhagen, and investigators were able to match blood in the submarine and torso. The charge sheet alleges Madsen cut Wall's body into pieces, punctured her torso and tied pipes to it to make it sink to the bottom of the sea. 
 
 Madsen: Wall was hit by metal hatch 
 
 According to Madsen, Wall was climbing to the top of a platform where he was holding the hatch. He slipped and lost his grip on the hatch, which then hit her on the head, he said. He told the Copenhagen City Court that Wall was badly injured and probably dead. 
 
 The inventor said he panicked and thought about suicide before deciding instead to dump her body at sea and sink the submarine. 
 
 He denied having a saw on his vessel when Wall accompanied him, DR reported. 
 
 Madsen remains in custody while the investigation continues. He has denied accusations that he was responsible for her death. 
 
 Peter Madsen, pictured on August 11, claims Kim Wall died in an accident aboard his submarine. 
 
 Talented writer goes missing 
 
 The submarine was found on August 11, about 15 hours after it had departed Copenhagen. Madsen was rescued from the sinking vessel and brought ashore, where he was picked up by police, but there was no trace of the missing journalist. 
 
 Madsen was later arrested and held in custody on suspicion of killing Wall. The inventor originally claimed he had dropped Wall off on land on the night of August 10, according to a police statement. 
 
 If Madsen is charged with murder and convicted, he faces a sentence of five years to life. The next pre-trial hearing is scheduled for October 31. 
 
 Wall, a graduate of Columbia University and London School of Economics, was based between Beijing and New York. A talented writer, her work appeared in The New York Times, the Guardian and TIME, among publications. 
 
 Correction: This story has been updated to clarify that some of Wall's remains were found in a separate bag from her clothing.
– Danish divers made a grisly discovery Friday: They found the head and legs of journalist Kim Wall in a bay near Copenhagen, reports Reuters. What's more, the discovery appears to further undermine the unraveling story of inventor Peter Madsen, who has been accused of killing her. Divers in Koge Bay found two bags, one with Wall's remaining body parts—her torso had previously washed up—and another containing her clothes and a knife, per CNN. The bags had been weighted down with pieces of metal. The 30-year-old was last seen alive on Aug. 10 when she boarded Madsen's submarine. Madsen, whose story has changed, maintains that Wall died accidentally when the sub's heavy metal hatch struck her in the head. However, authorities say an autopsy shows no such damage to Wall's head, reports the BBC. Madsen, 46, remains imprisoned as the investigation continues. He has admitted to disposing of Wall's body at sea, but says he did so in a panic because he blamed himself for losing his grip on the hatch. Prosecutors, however, paint a much darker picture. They point to disturbing videos found on Madsen's computer showing the torture and decapitation of women and to a post-mortem examination that revealed knife wounds to Wall's genitals and rib cage "around or shortly after her death." Authorities say they hope the new evidence will help them determine a cause of death.