Here's a timeline of the events https://www.flashback.org/sp61479549 (swedish)

https://translate.google.se/translate?sl=sv&tl=en&u=https%3A... (google translate)

The timeline is that the body was dismembered and dumped hours before he sank the submarine and his subsequent rescue.

The allegation is that he did something to the body before the submarine had its accident.