A man pardoned by President Donald Trump for rioting at the U.S. Capitol on Jan. 6, 2021, was arrested Sunday for allegedly threatening to kill one of the top Democrats in Congress.

New York State Police announced the arrest of Christopher Moynihan on Sunday with the help of the FBI’s Joint Terrorism Task Force. Moynihan had been serving a 21-month prison sentence when he and 1,500 other rioters were pardoned by Trump in January.

On Tuesday, CBS News reported Moynihan had sent a text message about killing House Democratic Leader Hakeem Jeffries (D-N.Y.).

“Hakeem Jeffries makes a speech in a few days in NYC I cannot allow this terrorist to live,” Moynihan allegedly wrote, according to court documents obtained by CBS News. “Even if I am hated, he must be eliminated, I will kill him for the future.”

Jeffries said he was grateful to police for making the arrest.