Bank account got frozen and cannot pay rent?!

[Wen Guo]

Dear BP people I'll need your help on this- I just purchased a rental, the tenant came with it. He works in hospital as nurse and seems to be a nice guy, he does has a bankruptcy history (home got foreclosed a few years ago). When this very first month rent is due, he told me his bank account got frozen just the day before, he has half of the rent in cash for me, and the other half as a check for me to deposit later when the bank issue gets resolved. What should I do, should I trust him? Should I charge late fee? Should I be worrying? Big thanks everyone in advance!!!