A 28-year-old Utah man is in custody after allegedly assaulting a Democratic congressman at a Sundance Film Festival event, telling him, “We are going to deport you and your kind,” police said.

Rep. Maxwell Frost tweeted on Saturday night that he had been attacked by a man “who told me that Trump was going to deport me before he punched me in the face. He was heard screaming racist remarks as he drunkenly ran off.”

Frost went on to thank the Park City police for arresting suspect Christian Joel Young.