Manhattan District Attorney Alvin Bragg sought to reassure his staff in an internal message Saturday that intimidation or threats against them would not be tolerated. The communication comes as his office moves forward in its investigation into former President Donald Trump, who said that he believes he will be arrested on Tuesday and put out a call for his supporters to protest.

“Please know that your safety is our top priority,” Bragg said in a memo to office staff obtained by NBC News from a senior official at the Manhattan DA’s office.

He added, “We do not tolerate attempts to intimidate our office or threaten the rule of law in New York.”