Tenant served with Notice to Vacate - Now his rent check has bounced...

[Isidoro Leon]

Hello Again BP Community, 

I have the following situation but not sure how to approach it as it's a first for me.  A week ago, I served a month-to-month contract tenant a Notice to Vacate.  For a couple of weeks prior to that, the tenant made claims his bank account funds are locked.  I had not asked for details as his behavior is somewhat paranoid and combative.  However, I noticed his rent check for the current month has been returned (via return deposit item) which had never happened before.  He has until the end of March to vacate per the Notice to Vacate.  What are my options with this situation where it's possible he may potentially be refusing to pay rent now that he's been asked to leave? 

Any input is greatly appreciated.

Moy