A Brooklyn man pleaded guilty on Friday to threatening to murder a U.S. senator over what he said was criticism of President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE.

Michael Brogan faces up to 10 years in prison, according to U.S. Attorney Richard Donoghue's office.

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According to the U.S. attorney's office, Brogan left a voice message directed at an unidentified senator in which he said, “You watch your [expletive] 'cause ... I’m going to put a bullet in ya."

The message also warned the senator over "your constant lambasting of President Trump. Oh, reproductive rights, reproductive rights.”

“You watch your [expletive]. If I see you on the streets, I’m gonna [expletive] light you up with [expletive] bullets," Brogan reportedly said.

Brogan told the New York Daily News he made the call in “the heat of the moment” after hearing the senator criticize Trump and anti-abortion protesters.

“Brogan threatened to assault and murder a sitting United States senator to silence the senator and interfere with the performance of the senator’s official duties,” Donoghue said in a statement. “The Department of Justice stands ready to vigorously prosecute those who seek to subvert our constitutional system and intimidate elected officials through threats of violence.”