Transcript for FBI investigates Jussie Smollett in threatening-letter case

Now to that new twist in the jussie smollett case. The FBI is now investigating E actor played a role in sending that threatening letter to himself a week before the incident. Eva pilgrim is in Chicago with the latest, good morning, Eva. Reporter: Good morning, Michael. This morning growing questions for jussie smollett. This as those two men who say the actor paid them were seen here at this courtwhite house. We're told they were talking to investigators and prosecutors. This morning, the jussie smollett case widening with both the FBI and U.S. Postal inspection service now investigating this threatening letter and whether the "Empire" star played a role in sending it to himself. The explicit letter which made homophobic and racis threats against him was sent to "Empire" studios January 22nd and spoke about it last week. On the letter it had a stick figure hanging from a TRE a gun pointing towards it with the words that said smollett, jussie, you will die. There was to address but it said in big red caps, Maga. Did I make that up too? Reporter: Sources confirming to ABC news it's now being receiving the threat smollett called police after an alleged racist and moment phobic attack. "Empire" isn't going to spend thousands of dollars on artists who could try to take us down. Reporter: Investigating whether he staged that attack with the attack of these two brothers who not been charged. He maintained his innocence and says he has been further victimized by claims alleged to these perpetrators that Jesse plays a role in his own attack. Anyone claiming otherwise is doing. This coming Ast documents show smollett as what accused of giving false statements to the LAPD allegedly impersonating his brother charged with false impersonation, driving out the influence and he pleaded no contest to reduced charges and completed an alcohol treatment program. Smollett's team has reached out to mark geragos. He's represented high-profile clients like Michael Jackson and talked to him about representing the actor. No decision this morning. Eva, is there any indication when he will make himself available to talk to police again? Reporter: We have not heard any indication from police or from his team when he will talk to police. We have been told from his team they have an open communication with authorities. Thank you.

This transcript has been automatically generated and may not be 100% accurate.