From https://www.scotusblog.com/2026/06/court-rules-that-law-enfo...

Additional details:

> The information that Google provided to law enforcement officials came in three tranches. First, Google gave law enforcement officials a list of the 19 accounts (but without the names attached to those accounts) linked to devices that were within 150 meters of the bank during the 30 minutes before and after the robbery. Second, based on that list of 19 accounts, the government asked for additional information about nine accounts that were in the area during a two-hour period. At the third step, a detective asked for, and received, the names and information associated with three accounts – one of which was Chatrie’s.

> Relying on the location data, law enforcement officials obtained a warrant to search two residences linked to Chatrie, where they found almost $100,000 of the stolen cash, a gun, and demand notes.

> Prosecutors charged Chatrie with bank robbery. He asked the trial judge to bar prosecutors from using the evidence obtained as a result of the geofence warrant at his trial, arguing that the warrant violated the Fourth Amendment.

> A federal district judge agreed that the warrant in Chatrie’s case did not have the kind of probable cause and specificity that the Fourth Amendment requires. However, she nonetheless allowed the prosecutors to use the evidence, reasoning that even if there had been a violation of the Fourth Amendment, law enforcement officials had acted in good faith.

Link to ruling:

https://www.supremecourt.gov/opinions/25pdf/25-112_0am4.pdf

US Supreme Court rules geofence warrants require constitutional protections