[CH] Over 100,000€ gone, maybe more (love scam)

Found out my father (M63) is highly involved in a love scam. So far I know over 100’000 euros have been transferred to different offshore accounts under different names, and a “shared” crypto wallet has been created. (Don’t know how much is in there) There are also people (not the romantic interest) pressuring him to send more money and threatening to report him for money laundering. Which is then faithfully reported to the “romantic partner” for advice.

He has no idea I know, and I have no idea how to tell him. He’s not yet retired, and still married to my mother (71).

As you can imagine the consequences are severe regardless of what I do.

The transfers are ongoing and the latest one was around 7’000€ two weeks ago. I want to somehow make this stop, but am afraid to speak with him and have them clear out everything at once. (He’s sent all his id information, pictures of his credit cards, even the internet router)

What can the police do, or what is the best course of action? This is a challenge on multiple fronts, as it will be not only the financial side but also the infidelity.

Edit: Obviously I will confront the situation. There is no scenario that this will be left unaddressed. They are currently traveling and will return next week. I want to prepare as best as possible to address it then. That’s why the post. You don’t need to convince me to talk to him about it and try to stop him or to talk to my mother. I want to deal with this asap and in the most effective way!