Though gunman Omar Mateen died during his attack, his wife, Noor Salman, soon came under suspicion for involvement, and she's now on trial for "providing material support to a foreign terrorist organization and obstruction for justice" because, in the eyes of prosecutors, she may have known parts of what Mateen was planning.
This comes after prosecutors rested their case on Thursday.
Meanwhile, attorneys in federal court will try to convince jurors that Salman didn't help her husband as he prepared for the attack on the Pulse nightclub in June 2016. The attorneys are seeking a mistrial in her case.
Lawyers for Noor Salman, the widow of the Pulse nightclub shooter who faces life in prison on terrorism charges if convicted, are asking for the case to be dismissed.
Seddique Mir Mateen, father of Omar Mateen, the shooter of the Pulse nightclub massacre, talks to reporters in Fort Pierce, Florida, June 15, 2016.
In addition, an anonymous tip on November 1, 2012, indicated Seddique Mateen was seeking to raise $50,000 to $100,000 via a donation drive to contribute toward an attack against the government of Pakistan, according to the email included in the defense motion.
Scheller argued in the motion that by withholding that information for so long, the federal government had robbed him of the opportunity to investigate a line of defence, violating Salman's constitutional rights to due process and a fair trial.
Defense attorneys argued the late revelation is unconstitutional, citing the 1963 Supreme Court case Brady v. Maryland.
But U.S. District Judge Paul Byron said, "It is not clear whether the objective of the transfers was illegal". This latest evidence, they say, points instead to Mateen's father as a potential accomplice.More news: Police arrest suspect wanted in beating of autistic man in Mississauga
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Seddique Mateen was on the prosecution's witness list, but was not called to testify in the trial.
"Mateen's father played a significant role in the FBI's decision not to seek an indictment from the Justice Department for false statements to the FBI or obstruction of justice against Omar Mateen", the motion from the Noor Salman defense claimed, referring to the 2013-2014 investigation.
Defense lawyers may call Seddique Mateen to testify.
Salman's attorneys have said they plan to tell jurors that she was diagnosed with PTSD because of Mateen's domestic abuse, according to the Sentinel.
Prosecutors, they said, also failed to initially notify them that forensic evidence contradicted Salman's assertion that she had visited the nightclub before the shooting.
The defense claimed that Seddique Mateen's relationship with the FBI influenced a 2013 investigation into threatening comments Omar Mateen allegedly made toward coworkers.
The email went on: "As a result of the discovery of these receipts, an FBI investigation into Seddique Mateen was opened".
The judge said that he will consider the defense motion from Noor Salman's attorney's later on Monday in regard to a possible mistrial.
"I don't know what made him [do this], I have no idea, I had no idea that he felt resentful in his heart and had gone to the gay [he uses the derogatory word hamjensbazi] club and killed men and women there", Seddique Mateen said in a video on his Facebook page soon after the shootings, according to the Guardian.