Anthony Kazmierczak was hit with a charge alleging he “forcibly assaulted, opposed, impeded, intimidated and officer and employee of the United States ”

A man is tackled after spraying an unknown substance at Rep. Ilhan Omar, D-Minn., during a town in Minneapolis on Tuesday.Octavio Jones / AFP via Getty Images

The Justice Department filed charges Thursday against a man who allegedly tried to spray Rep. Ilhan Omar, D-Minn., with a substance from a syringe during a town hall in Minneapolis this week.

Anthony Kazmierczak faces a count alleging that he "forcibly assaulted, opposed, impeded, intimidated and officer and employee of the United States" while she was engaged in official duties.

The affidavit alleges that Kamierczak told a close associate years ago that he said, "Somebody should kill that b--," in reference to Omar.

After Omar called for Homeland Security Secretary Kristi Noem to resign at the meeting Tuesday, Kamierczak appeared to say, "She`s not resigning. You`re splitting Minnesotans apart" after spraying her, according to the FBI.

"According to Representative Omar, the liquid stained her clothes and may have reached her face and right eye," an affidavit the FBI filed in support of the criminal complaint said.

Omar`s office said Wednesday that the substance was apple cider vinegar.

"The town hall meeting was temporarily disrupted and delayed. Representative Omar, though visibly shaken, continued with the town hall and later posted on X that she was okay," the affidavit said.

Omar on Wednesday blamed the attack on Trump`s frequent verbal attacks against her.

"What the facts have shown since I`ve gotten into elected office is that every time the president of the United States has chosen to use hateful rhetoric to talk about me and the community that I represent, my death threats skyrocket," Omar said at a news conference.

Trump said in an interview with ABC News that Omar "probably had herself sprayed, knowing her."

Kazmierczak`s social media accounts include multiple photos supporting Trump and criticizing Democrats, and at least one post mocking Omar.

Kazmierczak has a criminal record that dates back to 1989, when he was charged and later pleaded guilty to the unauthorized use of a motor vehicle, according to public records. He was ordered to pay $551, the records showed. It was unclear whether he was sentenced to serve time or put on probation.

In 2009, Kazmierczak was charged with driving while intoxicated in Minnesota and pleaded guilty. A year later, he was convicted again for driving under the influence. Divorce records from 2017 showed that he was unemployed at the time and was receiving disability insurance benefits of nearly $40,000.

An NBC News review last month showed the president`s rhetoric against perceived political adversaries often leads to an increase in threats against his targets.

The U.S. Capitol Police, meanwhile, released its annual report Tuesday about investigated threats related to Congress that showed that investigations "concerning statements, behaviors, and communications directed against Members of Congress, their families, staff, and the Capitol Complex" shot up to 14,938 last year, compared to 9,474 in 2024.

It was the third consecutive year the number had increased.