The U.S. Department of Homeland Security conducts an extensive operation to monitor anti-ICE protesters and left-leaning organizations in and beyond Minnesota, according to newly disclosed records. The activity focuses on whether groups supported protesters against an immigration crackdown that followed Immigration and Customs Enforcement’s killing of nurse Alex Pretti in Minneapolis in January.

The New Republic and The Guardian report that DHS investigations included obtaining financial records from labor unions and nonprofit organizations, sending undercover agents to meetings, and infiltrating communications. Both outlets describe DHS using intrusive methods such as subpoenaing multiple years of financial documentation, including wire transfer records, and recording information about protest activity at public locations. They also report infiltration of Signal chat groups to identify protest plans and political views.

While both outlets emphasize the scale and intrusiveness of the surveillance, they differ mainly in emphasis. The New Republic adds detail about prosecutors presenting a conspiracy theory to a grand jury and notes that, although the investigated groups have not faced criminal charges in those accounts, federal prosecutors later charged individuals connected to alleged interference with immigration agents.