MINNEAPOLIS — The Justice Department has charged a man who squirted apple cider vinegar on Democratic U.S. Rep. Ilhan Omar at an event in Minneapolis, according to court papers made public Thursday.

The man arrested for Tuesday’s attack, Anthony Kazmierczak, faces a charge of forcibly assaulting, opposing, impeding and intimidating Omar, according to a complaint filed in federal court.

Authorities determined that the substance was water and apple cider vinegar, according to an affidavit. After Kazmierczak sprayed Omar with the liquid, he appeared to say, “She’s not resigning. You’re splitting Minnesotans apart,” the affidavit says. Authorities also say that Kazmierczak told a close associate several years ago that “somebody should kill” Omar, court documents say.

Kazmierczak appeared briefly in federal court Thursday afternoon. His attorney, Jean Brandl, told the judge her client was unmedicated at the time of the incident and has not had access to the medications he needs to treat Parkinson’s disease and other serious conditions he suffers from.

U.S. Magistrate Judge Dulce Foster ordered that Kazmierczak remain in custody and told officials he needs to see a nurse when he is transferred to the Sherburne County Jail.

Kazmierczak also faces state charges in Hennepin County for terroristic threats and fifth-degree assault, Hennepin County Attorney Mary Moriarty announced Thursday.

“This was a disturbing assault on Rep. Omar, who is frequently the target of vilifying language by fellow elected officials and members of the public,” Moriarty said. “The trust of our community in the federal government keeping politics out of public safety has been eroded by their actions. A state-level conviction is not subject to a presidential pardon now or in the future.”

The attack came during a perilous political moment in Minneapolis, where two people have been fatally shot by federal agents during the White House’s aggressive immigration crackdown.

Kazmierczak has a criminal history and has made online posts supportive of President Donald Trump, a Republican.

Omar, a refugee from Somalia, has long been a fixture of Trump’s anti-immigrant rhetoric. After she was elected seven years ago, Trump said she should “go back” to her country. He recently described her as “garbage” and said she should be investigated. During a speech in Iowa earlier this week, shortly before Omar was attacked, he said immigrants need to be proud of the United States — “not like Ilhan Omar.”

Omar blamed Trump on Wednesday for threats to her safety.

“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 told reporters.