Prosecutors say that Danish submarine inventor Peter Madsen is not appealing his murder conviction over the killing and dismemberment of Swedish journalist Kim Wall.

The prosecution tweeted Monday that the defense has only appealed against the life sentence handed down to Madsen by Copenhagen City Court. The prosecutors insist the sentence is correct.

Madsen was found guilty April 25 of murder, sexual assault and the defilement of Wall. The Copenhagen City Court ruled unanimously that Madsen, 47, had lured Wall, 30, onto his hand-built submarine with the promise of an interview she had been trying to get for months.

The defense announced at the time that it would appeal, but didn't specify whether it was disputing Madsen's guilt or the sentence.

No date for the appeal has been set.