US immigration agents in Oregon used a custom-made app to identify neighborhoods and people to target, and had daily arrest quotas they sought to meet during operations, courtroom testimony has revealed.

Details about Immigration and Customs Enforcement (ICE) officers’ surveillance tools and arrest goals in the state have come to light in a federal lawsuit that compelled officers to answer questions under oath, offering a rare window into opaque, internal strategies that are generally kept secret and have been driving mass detentions and chaotic raids.

The class-action suit, filed by Innovation Law Lab, an immigrants’ rights non-profit, challenged ICE’s practice of detaining people without warrants or probable cause. Advocates said the tactic resulted in widespread racial profiling and unconstitutional arrests, and a federal judge sided with the plaintiffs, issuing a ruling broadly halting warrantless arrests in Oregon.

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