In the morning when I get outside, I find holes in the lawn. I know they are dug at night.
Holes in My Lawn
Certified GKH Gardening Expert
Here are some links that may help you compare the damage you are seeing to some examples in the articles. You may want to contact a local lawn service to see if they have seen this damage in other areas in your region.
I also might suggest you contact your local County Extension Office. They may have information on your local area and the common lawn pests. Here's a link to help locate your nearest extension office: https://www.gardeningknowhow.com/extension-search/