A North Korea expert and former U.N. official detained for months in Switzerland on suspicions of spying for a foreign government has been released from prison, NK News has confirmed.

The Canadian national named Craig Boljkovac is back home in Geneva and no longer in pre-trial detention, a joint investigation with Swiss media company Tamedia has found, after his mysterious disappearance early last year raised alarm among friends about his whereabouts.

However, it is unclear when exactly the expert was released, what it means for the espionage case against him and whether he is under house arrest. No publicly available