https://www.thelocal.no/20200428/norway-billionaire-tom-hagen-seized-over-wifes-disappearance So the husband is a technophobe, was being voluntarily monitored, and the police have no evidence...
According to VG's crime commentator Øystein Milli it is likely that Hagen had an accomplice who played the role of the kidnappers sending encrypted and coded messages during ransom negotiations.
"I think it seems unlikely that he has played the opposing party while he has been voluntarily monitored and the police have followed his communication channel," he said. "He would have had to be able to send encrypted messages at the same time, which I find it hard to believe."
https://www.thelocal.no/20200428/norway-billionaire-tom-hagen-seized-over-wifes-disappearance
So the husband is a technophobe, was being voluntarily monitored, and the police have no evidence other than they ruled out all other possible leads?