Tenant Car Damage in their Drive Way!

[Brunno Goncalves]

This past weekend, two of my tenants got their cars damaged (minor scratch on one, and good scratch on the other). I have construction happening on one of the units, and there is a lot of movement in the building because of it. 

I received a text from my tenant with pictures of the damage but they don't know how it happened or who may have been. They are blaming the workers or the delivery guys who delivered the construction materials. 

I would like to see how landlords here would handle something like that. I know I'm not responsible, but I want to handle in a way that it does not cause future stress with the tenants, if that is possible.

Thanks in advance for the help.