The ties that bind II
So where do the lawmakers fit in?
Dutschke can be linked to Sadie Holland through her son, Democratic state representative Steve Holland.
Dutschke failed in a bid as a Republican to unseat the younger Holland.
As for Curtis, Sadie Holland presided over a 2004 assault hearing involving Curtis, who says he has been in jail "over 20 times," but never convicted.
Dutschke said he once met Wicker.
Suspect No. 1
The letters read, in part: "To see a wrong and not expose it, is to become a silent partner to its continuance."
They were signed "I am KC and I approve this message," a source told CNN.
Each letter had a Memphis, Tennessee, postmark and no return address.
The very next day, authorities arrested Curtis.
His attorney, Christi McCoy, said he'd been framed by someone who used several phrases Curtis likes to use on social media.
The FBI said the letters tested positive for ricin, a toxin derived from castor beans that has no known antidote.
The very next week, authorities dropped the charges against Curtis after they said they had new information.
"I think now, how many people are thrown in jail because of circumstantial evidence and someone can frame you that easily," he told CNN last week after being cleared.
Suspect No. 2
The feds then turned their attention to Dutschke.
Agents searched his residence and former martial arts studio. Dutschke told CNN affiliate WMC-TV that he agreed to the FBI search "to help clear my name."
"I had absolutely nothing to do with those letters," he said.