That’s correct, because a certain conspiracy theorist published “smoking gun” screen caps of information on the voting systems in question, and there was unredacted information that led back to Mesa county.
Edit: I’ve read the OP from NPR more closely and it says the investigation predates this episode and was triggered by an unauthorized person showing up in some logs
https://arstechnica.com/information-technology/2021/08/8chan...
Edit: I’ve read the OP from NPR more closely and it says the investigation predates this episode and was triggered by an unauthorized person showing up in some logs