This week brought an "unprecedented" number of threats against FBI personnel and property, law enforcement sources tell CNN. In the days following the search, violent threats against the bureau began surfacing online, with posters writing, "Garland needs to be assassinated" -- referencing Attorney General Merrick Garland, who "personally approved" the decision to seek a warrant -- and "kill all feds." Additionally, the biography and contact information of the federal magistrate judge who signed the search warrant was wiped from a Florida court's website after he too became the target of violent threats.

In a separate incident Thursday, a man who was believed to be armed with an AR-15 rifle and a nail gun tried to breach the FBI's Cincinnati field office. He was killed hours later after a standoff with authorities. Although the suspect's motive has not yet been identified, he had been known to the FBI because he had an unspecified connection to the January 6, 2021, riot at the US Capitol and because he had associates within a far-right extremist group, two law enforcement sources told CNN on Friday.