(CNN) Two men who were being questioned in connection with an attack reported by "Empire" actor Jussie Smollett have been released without charge, the Chicago Police Department said Friday.

The men, who were arrested Wednesday, were released "due to new evidence as a result of today's interrogations," said Chicago police Chief Communications Officer Anthony Guglielmi. "And detectives have additional investigative work to complete."

The men arrested were the same two who police previously said were being viewed as "potential suspects," Tom Ahern, Chicago police communications deputy director said earlier Friday.

Earlier Friday, Guglielmi said two Nigerian brothers were being treated as "potential suspects" and that detectives had "probable cause that they may have been involved in an alleged crime."

Police did not say at that time precisely what the brothers were accused of or what the alleged crime might have been.

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