OXFORD, Miss. (WTVA) -- Paul Kevin Curtis' first words when entering federal court in Oxford Friday were simply, "I didn't do it."
He said that to his daughter Madison as he was seated.
After Friday's proceedings, she said she still supports him.
"We don't think he did this, but I have an open mind. After hearing all the evidence -- which, there wasn't really any at this point -- I'm going to go trhough the rest of this journey seeing what God has in store," Madison Curtis said.
In the hearing that lasted more than 3 hours -- before being recessed for the weekend -- much of the information explained in the federal courtroom had been released earlier this week.
By now, most know three ricin-laced letters were sent to U.S. Sen. Roger Wicker (R-Mississippi), President Barack Obama and Lee County Justice Court Judge Sadie Holland.
In addition, the way authorities narrowed the search and focused their attention on Curtis was also revealed.
Capitol Police stumbled upon his Facebook profile while searching derivatives of "KC," mentioned at the end of each letter.
That's when they saw two quotes on Curtis' page that seemed to match what was written in those letters: "I'm KC and I approve this message" and another quote which was included verbatim in the letters sent last week.
That excerpt from Curtis' Facebook page reads, "To see a wrong and not expose it is to become a silent partner to its continuance."
While the prosecution hammered that connection home in the hearing Friday, it left Curtis' attorney with more questions.
"I don't mean to in any way suggest that [sending poisonous letters to the President and Sen. Wicker is] not a horrific thing. It is, but I think what's even more horrific is when someone's arrested without real proof of what he did," attorney Christi McCoy said.
McCoy added that, despite those similarities, the special agent who took the stand during Friday's hearing offered little evidence.
For example, FBI Special Agent Brandon Grant said he could not prove the letters sent to all three officials -- postmarked in Memphis -- even came from Mississippi.
When asked what authorities found in Curtis' Corinth home, McCoy said she kept hearing the same thing.
"Almost every question that I asked the agent, he would say 'The investigation is ongoing, the investigation is ongoing,'" McCoy said.
That's why they're hoping that more proof will be shown on Monday, when the preliminary hearing continues.
"After hearing what I heard in this courtroom, it appears to me the reason I haven't been provided any evidence is it appears to be none that would link my brother directly to the charges that have been made," brother Jack Curtis said.
McCoy said the preliminary hearing resumes at 10 a.m. Monday at the U.S. District Court building in Oxford.