A man is facing federal assault charges after allegedly “forcefully” throwing a Subway sandwich at a U.S. Customs and Border Protection (CBP) agent during a confrontation Sunday night in Washington, D.C.

Metro Transit Police said they were patrolling the U Street area, seemingly as part of the Trump administration’s initiative to crackdown on crime in the nation’s capital, when a man later identified as Sean Charles Dunn shouted obscenities at a CBP agent, standing inches from his face and calling him a “fascist.”

Moments later, police said Dunn returned, wound up, and “forcefully threw” a sandwich at the agent, hitting him in the chest, according to court documents. He then ran away, with a trail of federal officers chasing him.

Witnesses could be heard giggling as Dunn darted from the cops, according to an Instagram video posted by a bystander. 

The incident comes after President Donald Trump on Monday federalized the DC Metropolitan Police Department under section 740 of the District of Columbia Home Rule Act, which allows the president to take emergency control of the police force for 30 days. 

Subway did not immediately respond to Fox News Digital’s request for comment.