INDIANAPOLIS -- An Indianapolis man is in jail after he was accused of threatening a mass shooting of illegal immigrants on Inauguration Day.  Police arrested the suspect this week for intimidation with the intent to commit terrorism. According to court records, IMPD learned about the alleged threats after internal security with TikTok notified the FBI. That led to the suspect being booked into jail on Thursday, just four days before he claimed he was going to kill numerous people at random. Logging onto TikTok, starting this past Sunday, police claim 58-year-old Preston Pickett began posting a series of threats. Pickett allegedly wrote, "Come J 20 I will shoot on sight." He then clarified, "I will kill many illegals on January 20."  Later he added, "I will have my kills on the first day Trump takes office" and also insisted "I will start exercising my 2nd amendment on all illegals." Police claim Pickett repeatedly bragged, "I will be famous for killing the most illegals in one day." Using his computer’s IP address and email, IMPD tracked down Pickett at his home this week, where the suspect told police his posts were freedom of speech. "It's pretty common knowledge you can't say anything you want at any time," said attorney John Tompkins. "For instance, you cannot yell fire in a crowded theatre." Tompkins isn't connected to the case, but says intimidation to commit terrorism is a Level 5 felony and is not protected speech in Indiana courts. "The First Amendment is to encourage debate. It's not to encourage danger. It's not to allow people a free hand to threaten their fellow citizens," said Tompkins. "If you threaten to commit a forcible felony against another person, that threat is a crime." "Freedom of speech is freedom to have your opinion, but you cannot have threats and explain how you're going to carry out those threats," said IMPD officer Tommy Thompson. According to the affidavit filed in the case, Pickett does have a history of mental health issues and compared illegal immigrants to terrorists before being arrested. During a search of his home, police did seize two long guns as a precaution. "We can't wait for the action to happen. We need to investigate and be sure we provide safety to the people in the community," said Thompson. Police claim Pickett had made various threats before for which he was not held accountable by the prosecutor's office. In 2023, Pickett allegedly threatened to shoot employees of the Marion County Prosecutor's Office on Ohio street as they walked to their cars, but he was not charged by the prosecutor for those threats. In March 2024, he also allegedly threatened a business in Florida without facing charges. Ultimately, it will be up to the Marion County Prosecutor's Office to file formal charges in the case.