Fulton County, Georgia District Attorney Fani Willis asked the FBI Sunday to assess security at her courthouse.
The request came in response to comments by former President Donald Trump against prosecutors investigating his business dealings and conduct after the 2020 election.
Trump is at the center of at least two criminal investigations.
He told a rally of thousands of supporters Saturday in Conroe, Texas, he hoped to see the largest protests to date if prosecutors do “anything wrong or illegal.”
Willis wrote that a grand jury will convene on May 2, adding that her office “will not be influenced or intimidated by anyone as this investigation moves forward.”