From 2021. In 2022 the missing cables were found and it looks like the cable was caught up in the trawl from a trawl boat: https://www.nrk.no/nordland/mysteriet-pa-havbunnen-_-na-er-s... (in Norwegian).
> Russians or ocean current
> Many theories arose.
> Among other things, there were some who thought that it could be a giant squid that had > torn the cable loose.
> Others thought it could be the Russians or ocean currents.
https://www-nrk-no.translate.goog/nordland/mysteriet-pa-havb...