Federal prosecutors served six grand jury subpoenas Tuesday to Minnesota officials as half of an investigation into whether or not they obstructed or impeded federal law enforcement during a sweeping immigration operation in Minneapolis-St. Paul space, a individual acquainted with the matter said.

The subpoenas, which search information, had been despatched to the workplaces of Gov. Tim Walz, Attorney General Keith Ellison, Minneapolis Mayor Jacob Frey, St. Paul Mayor Kaohly Her, and officials in Ramsey and Hennepin counties, the individual said.

The individual was not approved to publicly focus on an ongoing investigation and spoke to The Associated Press on condition of anonymity.

The subpoenas are associated to an investigation into whether or not Minnesota officials obstructed federal immigration enforcement through public statements they made, two people acquainted with the matter said on Friday. They said that it was centered on the potential violation of a conspiracy statute.

Mayor: Subpoenas are to stoke worry

Walz and Frey, both Democrats, have called the probe a bullying tactic meant to quell political opposition. Frey’s workplace was ordered to produce a long listing of information to a grand jury on Feb. 3, including “cooperation or lack of cooperation with federal law enforcement” and “any records tending to show a refusal to come to the aid of immigration officials.”

“We shouldn’t have to live in a country where people fear that federal law enforcement will be used to play politics or crack down on local voices they disagree with,” Frey said.

The subpoenas got here as the Trump administration urged a decide to reject efforts by Minnesota and its largest cities to stop the immigration enforcement surge that has roiled Minneapolis and St. Paul for weeks.

The Justice Department called the lawsuit, filed soon after the deadly capturing of Renee Good by an immigration officer, “legally frivolous.” Lawyers argued that the Department of Homeland Security is appearing within its legal powers to implement immigration legal guidelines.

Operation Metro Surge has made the state safer with the arrests of more than 3,000 people who had been in the nation illegally, the federal government said Monday in a court submitting.

“Put simply, Minnesota wants a veto over federal law enforcement,” Justice Department attorneys wrote.

Minnesota Attorney General Keith Ellison said the federal government is violating free speech and other constitutional rights with its unprecedented sweeps. He described the armed officers as poorly educated and said the “invasion” must stop.

The lawsuit filed Jan. 12 seeks an order to halt or restrict the enforcement motion. More filings are anticipated, and it’s not identified when U.S. District Judge Katherine Menendez will make a determination.

Hard to observe arrests

Ilan Wurman, who teaches constitutional law at the University of Minnesota Law School, doubts the state’s arguments will likely be profitable.

“There’s no question that federal law is supreme over state law, that immigration enforcement is within the power of the federal government, and the president, within statutory bounds, can allocate more federal enforcement resources to states who’ve been less cooperative in that enforcement space than other states have been,” Wurman told The Associated Press.

Julia Decker, coverage director at the Immigrant Law Center of Minnesota, expressed frustration that advocates have no means of figuring out whether or not the federal government’s arrest numbers and descriptions of the people in custody are correct. U.S. residents have been dragged from their houses and automobiles during the Minnesota surge.

“These are real people we’re talking about, that we potentially have no idea what is happening to them,” Decker said.

Police say ICE is focusing on off-duty officers

In a separate lawsuit, Menendez said Friday that federal officers can’t detain or tear fuel peaceable protesters who aren’t obstructing authorities.

Good, 37, was killed on Jan. 7 as she was shifting her vehicle, which had been blocking a Minneapolis road where Immigration and Customs Enforcement officers had been working. Trump administration officials say the officer, Jonathan Ross, shot her in self-defense, although videos of the encounter show the Honda Pilot slowly turning away from him.

Since then, the public has repeatedly confronted officers, blowing whistles and yelling insults at ICE and U.S. Border Patrol. They, in flip, have used tear fuel and chemical irritants against protesters. Bystanders have recorded video of officers utilizing a battering ram to get into a home as properly as smashing vehicle home windows and dragging people out of automobiles.

Police in the area, meanwhile, said off-duty law enforcement officers have been racially profiled by federal officers and stopped without trigger. Brooklyn Park police Chief Mark Bruley said he has obtained complaints from residents who are U.S. residents, including his own officers.

“Every one of these individuals is a person of color who has had this happening,” Bruley said during a news convention.

President Donald Trump last week threatened to invoke an 1807 law and ship troops to Minnesota, though he has backed off, at least in his public remarks.