Over a dozen stab wounds were found on the headless torso of a Swedish journalist last seen aboard an eccentric inventor’s submarine — and videos taken from his computer hard drive show women being tortured and executed, a Danish prosecutor said Tuesday.

Senior prosecutor Jakob Buch-Jepsen said during a pretrial hearing that the cause of death for 30-year-old Kim Wall has not yet been established.

Fourteen stab wounds were found on Wall’s lower abdomen area, according to news agency Ritzau. Some of the wounds also were found on the chest.

The injuries were sustained “around the time of death or shortly afterwards,” the prosecutor said, the Local of Sweden reported.

Peter Madsen, 46, is being held on preliminary charges of manslaughter and indecent handling of a corpse.

He denies both charges and has declined to voluntarily extend his preliminary detention.

According to Buch-Jepsen, investigators found a hard drive on which videos were stored showing women being executed by hanging and burning.

“We think it’s video recordings of true killing of women,” Buch-Jepsen said, according to a translation in the Ekstra Bladet newspaper. He said some of the videos show killings done by “decapitation and burning.”

Madsen said at the hearing that other people had access to the hard drive. He has claimed Wall died after being accidentally hit by a 150-pound hatch in the sub’s conning tower and that he buried her at sea.

Wall’s mutilated body was found off Copenhagen on Aug. 21, 10 days after Madsen’s arrest.

The two — who didn’t know each other beforehand — had gone out on Madsen’s 40-ton submarine, UC3 Nautilus, on Aug. 10.

The prosecutor said Madsen had killed Wall, cut up her body and attached a belt with a pipe to the torso to make it sink. The missing body parts were cut off after Wall’s death, he said, quoting an autopsy report.

The hearing at Copenhagen City Court was not aimed at determining Madsen’s guilt, but extending his detention to Oct. 31 while police continue their probe.