He filed a police report right away. 

In reality at this time I think many parts of the US is by far the cheapest place in the industrial world to live.. what other country could you buy a habitable 30k home .. have police fire and medical..

Do you keep documents in case the Thai police do come to one of your places? 

walk through the mud room and there is a wall with pistols the PM's check out.. then the front of the office had a bankers teller type situation for rent with bullet proof glass no less and then of course the front window was busted out  happens weekly he tells me .. disgruntled tenants.When doing rehab he had to have retired police officers on site they checked ID and sign in for any subs coming in to work.. they determined if it was not the neighbors stripping the house it was the workers that worked for the subs.. made sense they knew what they put in that day Knew the lock box code came back at night and poof. its another world out there it aint portlandia..I also took my banker a few times to Jackson MS where we were the largest HML in the market at the time.. down to south Jackson through west Jackson.. 

Checking the crime reports on the Indy Police department website and consulting an expert like Ryan Mullin would help too.

I also make sure I make my desire to buy properties known to those working in the city offices, utility companies, code enforcement officers, police officers, and others who are in positions to hear about potential properties.

After the police have cleared the scene and gathered their evidence, clean the place up and put it up for rent.

You can phrase it as you understand the police were called because of a dispute and let them know they need to keep it quiet or move.

If that doesn't work, you might have to go to the extent of calling the police and having him "trespassed" from the property - meaning that further trespass will subject him to arrest. 

The applicant has to submit the request themselves and authorize the authorities (typically police) to share the results with you.