Jan. 29 (UPI) -- The Justice Department on Thursday filed charges against Anthony Kazmierczak, 55, for spraying a substance on Rep. Ilhan Omar as she conducted a town hall hearing in Minneapolis.

FBI special agent Derek Fossi, in a criminal complaint, said Kazmierczak "forcibly assaulted, opposed, impeded, intimidated and interfered with" Omar while she was conducting a town hall with her constituents Tuesday, The New York Times reported.

Omar told the audience that Homeland Security Secretary Kristi Noem should resign when Kazmierczak approached her.

"She's not resigning. You're splitting Minnesotans apart," Kazmierczak said after squirting her with the unknown liquid, as reported by NBC News.

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