A couple of sources tell Cedar Posts that Charlotte's Police Chief has been served a Federal Subpoena in the Macon Georgia Police Department investigation and how the department handled a federal grant. Keep in mind that Monroe left Macon in 2005.
That same year a Macon city councilman was at the center of a federal probe into how he funded some of his local youth programs and why he cashed grant checks at a liquor store.
Media reports from 2005 state:
Macon Police Chief Rodney Monroe confirmed the FBI has been investigating for eight months whether Charles Dudley improperly spent $2,000 in checks made out to the Unionville Improvement Association, a nonprofit organization that spearheads various community projects. Monroe declined to comment further, citing a "gag order."
But Macon is not the only possible source of subpoenas, Monroe has been named in lawsuits in Richmond and may also play a key role in the Mecklenburg County DSS investigation.
So all things considered I wouldn't get too excited about the US Marshals visiting Chief Monroe.