[Tupelo]

Maybe. But I suspect further investigation will find something a little more mundane. Probably something like typographical errors in spelling and dates. And the broken headstones were ones that had been replaced.
My guess is the suspect had an outlet to sell the unusable stones. I wonder if the cops checked the local tombstone companies.

[ExGeeEye]

Sounds about right.

My cousin found a grave marker in the garden of the house she eventually bought. The real estate agent freaked out and started making phone calls about someone being buried on the property.

Turned out the former owner’s son worked for a monument company, which made a “typo” (engravo?) on a stone. The stone was redone and the man asked for the erroneous one, putting it in the garden.

My cousin has had what would have been the underside of the stone finished and engraved with the street number of the house.