While it doesn't apply to this case, there are caveats.
State crimes can be Federal crimes depending on the victim(s) or the suspect(s) that committed the crimes, and also depending on where the crimes took place.
Examples - if Noem or Bondi (for example) were raped the feds could take the case as they are both cabinet members. If a crime was committed in the Capitol Building, or on other Federal property the feds could take that case as well. On more non-example - a real case - is the attempted assassination of Justice Kavanaugh. https://en.wikipedia.org/wiki/Brett_Kavanaugh_assassination_plot
While it doesn't apply to this case, there are caveats.
State crimes can be Federal crimes depending on the victim(s) or the suspect(s) that committed the crimes, and also depending on where the crimes took place.
Examples - if Noem or Bondi (for example) were raped the feds could take the case as they are both cabinet members. If a crime was committed in the Capitol Building, or on other Federal property the feds could take that case as well. On more non-example - a real case - is the attempted assassination of Justice Kavanaugh. https://en.wikipedia.org/wiki/Brett_Kavanaugh_assassination_plot