Manhattan District Attorney Alvin Bragg offered a private retort to Donald Trump’s message Saturday urging supporters to protest his expected indictment, telling office employees in an email that “we do not tolerate attempts to intimidate our office or threaten the rule of law in New York,” according to a copy obtained by POLITICO.

“Our law enforcement partners will ensure that any specific or credible threats against the office will be fully investigated and that the proper safeguards are in place so all 1,600 of us have a secure work environment,” Bragg wrote, adding that the office has been coordinating with the New York Police Department and Office of Court Administration, the administrative arm of the court system in New York.

Bragg added that “as with all of our investigations, we will continue to apply the law evenly and fairly, and speak publicly only when appropriate.” In his email, Bragg didn’t identify Trump by name, referring only to the “public comments surrounding an ongoing investigation by this office.”