Smollett had told officers he was confronted in the predawn hours Jan. 29 by a pair of men who yelled racial and homophobic slurs at him, hit him in the face, poured an unknown substance on him and wrapped a rope around his neck.
Foxx has argued that there was noting outstanding in her decision to drop charges against Smollett, despite the fact that police and prosecutors have continued to say they believe the actor is guilty of perpetrating a hate crime hoax.
"I believe this is a just outcome based on the circumstances," Foxx told WLS-TV last month.
President Donald Trump said in a post on Twitter last month that FBI and Justice Department officials were also probing Foxx’s handling of the case.
The Associated Press contributed to this report.