My mother met this person on a dating website. And he claimed he is a oil rig diver, owner of a oil rig company providing diving services to oil rigs with 50 million in savings. He claims to have a daughter whose mum died while giving birth and now living with grandparents in Taiwan. He is based in Alaska but he is using a local Singapore number for WhatsApp. He also claims to have a condo in woodlands. While he hasn't asked for money yet, he continues to build relationship with my Mom and gathering information on my family. 

Beware of people who you meet online.