The brothers arrested on Wednesday were released Friday after Chicago police cited the discovery of "new evidence." The sources told CNN that the two men are now fully cooperating with law enforcement.
Smollett told the authorities that he was attacked by two men on January 29 who called out "racial and homophobic guilt." He said that an attacker had a rope wrapped around his neck and poured him an unknown chemical substance.
There are records showing that the two brothers are in an Ace hardware store in Chicago bought the rope found around Smollett's neck.
"It feels like I've said it's a Muslim or a Mexican or someone who's black, I think the doubters would have supported me a lot more," Smollett said. "And that says a lot about the place where we're currently a country."
CNN's attempts to reach both Smollett's representative and the lawyer on Saturday were unsuccessful.