My Taiwanese guest brought her so-called Nigerian boyfriend stayed in my apartment. She confessed to me that her bank account was banned in Taiwan due to suspicious activities. And this is related to her boyfriend but she didn’t tell the truth to the police while they are investigating this fraud case. After few days she stayed with him, She even found that this guy is the one hacked her Facebook account and steal her identity.
They just got to know each other for 8 months. This is the second time they meet. Obviously this guy is a conman. I feel unsafe to let them stay. What should I do?