Former federal prosecutor Maurene Comey sent an email Thursday to her former colleagues one day after being fired from the Manhattan U.S. attorney’s office, telling them that “fear is the tool of a tyrant.

Maurene Comey, a federal prosecutor and the daughter of former FBI director James Comey, told her former colleagues in an email that her sudden firing should “fuel the fire” of their work fighting abuses of power.

According to sources, President Donald Trump privately vented about having a Comey work in his administration.