Neighbors took down the porch roof and the siding of my house with it

[Joel Betances]

Hello BP members. I came upon a situation and need some advice. 
I bought a property 2 years ago that meets wall to wall with another property. This property used to be a duplex and the past owner decided to sell them separately since it’s 2 separate doors. 
The neighbor took down the porch roof which was also connected to my property leaving the side of my property exposed to the weather. The siding of my property has been removed and the inside wood now has mold on it. 

What are my choices in a situation like this. I’m assuming I need to file a police report but I’m not sure.