Anthony James Kazmierczak, 55, pleaded guilty in U.S. District Court to one count of assaulting a United States officer in connection with the Jan. 27 incident, in which prosecutors said he sprayed Omar with apple cider vinegar from a syringe during a public event focused on immigration enforcement policies.

The Justice Department said Kazmierczak acknowledged during a hearing before U.S. District Judge Joan Ericksen that he had planned the assault in advance and acted because he disagreed with Omar’s positions on immigration and federal enforcement actions.

The attack occurred as Omar criticized the U.S. Immigration and Customs Enforcement agency’s operations in Minnesota and discussed fatal shootings involving federal agents in Minneapolis. Authorities said the liquid sprayed on Omar’s clothing and skin was later confirmed through laboratory analysis to contain acetic acid.

Omar was not injured.Security personnel subdued Kazmierczak after he shouted and gestured toward Omar during the event, according to officials. He was later arrested, while the town hall resumed after a temporary disruption.Omar, a Somali-born Muslim lawmaker who arrived in the United States as a refugee child and became a U.S. citizen in 2000, has frequently been the target of political attacks and threats linked to her outspoken criticism of Republican immigration policies and U.S. foreign policy.

President Donald Trump has repeatedly criticized Omar publicly and on social media, including remarks questioning her place in the United States and calling for punitive action against her. Civil rights advocates and political analysts have warned that increasingly hostile rhetoric directed at elected officials has contributed to a broader rise in political intimidation and violence across the country.

The Justice Department did not immediately disclose a sentencing date. Federal assault charges involving attacks on elected officials can carry prison terms and financial penalties depending on the severity of the offense and intent established by prosecutors.

The incident has intensified tensions between federal agencies, local law enforcement, elected officials, and residents, deepening concerns over accountability and the use of force.

The shooting occurred during an attempt by federal immigration agents to detain Alex Pretti, a US citizen, in a busy area of Minneapolis.

Officials from the federal government stated that the agents acted in self defence after being assaulted, a claim that has since been questioned by video footage recorded by bystanders.

Footage reviewed by independent observers shows Pretti holding a mobile phone rather than a firearm during the confrontation.

The videos appear to capture him attempting to intervene after agents pushed several protesters to the ground, moments before the situation escalated.

In the recordings, Pretti can be seen raising his arm defensively as an agent deploys pepper spray.
Several agents then restrain him, forcing him onto the ground as voices are heard shouting warnings about a possible weapon.

Shortly afterward, one agent appears to step away holding a gun believed to have been removed from Pretti.

Despite this, additional footage shows an officer firing multiple shots into Pretti’s back while he was restrained on the ground.

Federal officials have insisted that the agents involved were under threat and acted according to protocol.

Senior figures repeated that the officers were the victims in the encounter, a position that has drawn sharp criticism from city leaders.

The Minneapolis police chief stated publicly that the videos do not support claims that Pretti brandished a weapon.

He described the federal account as deeply troubling and said there was no evidence presented to local police indicating immediate danger to the agents.

The shooting marks the second fatal incident involving federal officers in Minneapolis this month.

Earlier in January, another US citizen was killed during a separate federal operation, further inflaming public anger and distrust.

Community response has been swift and emotional.

Residents gathered at a makeshift memorial in freezing conditions, leaving flowers and candles while demanding answers and transparency.

Business leaders from major Minnesota based companies released a joint appeal urging calm and cooperation among all levels of government.

While they avoided taking a stance on the shooting itself, they called for immediate de escalation and collaborative solutions.

National political figures also weighed in. Former leaders warned that fundamental values were being eroded and urged an end to what they described as excessive force.

Protests have continued across Minneapolis, though some areas remained calm following the shooting.

Demonstrations have also spread to other major US cities, driven by opposition politicians and civil rights advocates.

Legal action followed rapidly after the incident. A federal judge issued an order preventing the destruction or alteration of evidence, ensuring that all material related to the shooting is preserved.

State and local authorities have demanded access to the investigation. Federal agencies, however, have so far declined to allow local participation, fueling further criticism and suspicion.

As hearings approach, pressure is mounting on federal officials to reconcile their statements with the video evidence now widely viewed by the public.

The case has become a flashpoint in the broader national debate over immigration enforcement, policing authority, and the limits of federal power.