Newly disclosed records reveal the US government extensively spied on prominent leftwing organizations and on protesters as part of a vast operation into groups opposing the immigration crackdown in Minnesota earlier this year.

Internal investigative reports show the Department of Homeland Security (DHS) sent undercover agents to community meetings in the Twin Cities and New York City, infiltrated Signal chats and obtained financial records of mainstream unions and left-leaning non-profit groups.

Nearly 30 internal law enforcement reports were released on Thursday as part of a criminal case the Department of Justice (DoJ) has filed against 15 Minneapolis protesters. The defendants are accused of a “conspiracy” to “impede” US immigration officers during the Trump administration’s surge in the region.

The DHS investigative reports were disclosed by the government and submitted to the court by an attorney for one of the defendants. The records show that in January, DHS launched an inquiry called “Operation Puppet Master” to identify a “network of conspirators” organizing against US Immigration and Customs Enforcement (ICE). The operation came as community organizing against ICE was swelling in the region in response to the killings of Renee Good and Alex Pretti.

A DHS report from February said the agency was looking into people who were “providing material support to violent opportunists and agitators”. The records suggest agents launched elaborate spying efforts targeting activists, protesters and mainstream progressive organizations opposing the Trump administration’s immigration policies.

“I was shocked at the scope and the apparent lack of investigative discipline involved, but not totally surprised,” said Kevin Riach, an attorney for one of the indicted protesters, who filed the tranche of records in federal court.

DHS spokespeople did not respond to inquiries and the DoJ declined to comment.

There’s more there, but the formatting is stopping me from copying it all and it’s late…