The wife of a wealthy Norwegian real-estate tycoon has been kidnapped and held for a $10 million ransom that her captors are demanding be paid in cryptocurrency, police said on Wednesday.

Anne-Elisabeth Hagen, 68, who is married to multimillionaire Tom Hagen, vanished on Oct. 31 — but news of her disappearance was only just made public.

“There has been demand for ransom, and serious threats have been made in this case,” Police Inspector Tommy Broeske said at a press conference. “As things now stand, we advise the family not to pay.”

Police said the case was given a “low profile” because of the threats but went public in an effort to garner information on her whereabouts, BBC News reported. So far, there has been no indication that Anne-Elisabeth is safe.

The wife’s suspected kidnappers have demanded $10.3 million to be paid in Monero, a type of cryptocurrency, Norwegian tabloid Verdens Gang reported, quoting unnamed sources.

Police wouldn’t divulge the size of the demand.

Newspaper Aftenposten first broke the news of the kidnapping on Wednesday, saying it had known for some time about the case but opted not to publish a story to protect Anne-Elisabeth.

The paper reported that it appeared the 68-year-old had been abducted from her bathroom of her home in Lorenskog and that there had been “limited dialogue” with her captors over the internet.

Tom Hagen’s net worth was estimated at around $200 million by Norway’s financial magazine Kapital, which ranked him the 172nd wealthiest person in the country. He made his multi-millions in the real estate and energy industries.

Through his lawyers, he’s decliend to comment on his wife’s disappearance.

The couple lived a quiet life away from the public eye, according to local media reports.

Kidnappings are extremely rare in the Scandinavian nation, which has 5.3 million people and prides itself on low crime rates.

With Post wires