MINNEAPOLIS (AP) — A man who sprayed vinegar at Democratic U.S. Rep. Ilhan Omar at a town hall meeting in Minneapolis pleaded guilty to assault Thursday in federal court after reaching a deal with prosecutors.

Anthony Kazmierczak, 55, is awaiting sentencing.

Kazmierczak, dressed in bright orange jail clothing, gave only a fragmentary explanation Thursday of the Jan. 27 assault, which came as the city was already on edge after the fatal shootings of two people by federal agents during a White House crackdown that brought thousands of immigration officers to Minnesota.

After being asked what he remembered of the assault, he told U.S. District Judge Joan N. Ericksen: “It’s fuzzy.”

Kazmierczak, who was in the audience during Omar’s January town hall, leaped up when the representative called for the ouster of then-Homeland Security Secretary Kristi Noem. He sprayed liquid from a syringe as court documents say he shouted that Noem would not resign and that Omar was “splitting Minnesota apart.”