Baltimore) to find 7 under $100M to investigate.

As the broker, you can help the investor perform some pre-contract due diligence by making a discrete investigation into the nature of the tenancies.  

I’ll note this one down to investigate further for future! 

Not gonna happen.Your property managers advice is correct; you investigate via the police report and if it was truly an accident you put the tenant on notice about it and move on down the road.

I was just needing a ballpark figure to see if the purchase price was even worth further investigation.

Investigating wholesaling might be a good move also, and definitely attend meetups in your area.

Hire an investigator to locate said person and have them sign a release.  

Based on what I read, it looks like they may have not done things above board (investigated by FBI etc), typically in these instances it does not end well for investors as they will get wiped out by secured creditors/banks.

Even inside a wall when investigating pipe leaks!

There is a company in CA they are Private investigators they are really big at going after overages.