Spokesman Mark Powell said Monday that Attorney General Alan Wilson received a "voluminous" report from the State Law Enforcement Division on Friday.
In February, South Carolina Policy Council President Ashley Landess filed a complaint alleging Harrell used his office to boost his finances by using influence to get a permit for his pharmaceutical business.
The Policy Council also took issue with Harrell appointing his brother to a committee that screens judicial candidates and picks the top three for each seat that the Legislature gets to choose from.
Harrell called the complaint a baseless attack driven by a "personal and political vendetta."
Harrell spokesman Greg Foster said Monday he had not seen the report.