Judge blocks warrantless Flock ALPR search, suppresses meth seizure evidence
U.S. District Judge Sara E. Hill on Oct. 3, 2026 ruled that a Tulsa County sheriff’s deputy’s warrantless query of the Flock Safety automated license‑plate reader (ALPR) database violated the Fourth Amendment, and she ordered the suppression of evidence seized from a drug‑trafficking case.
The ruling signals a major legal test for the rapidly expanding network of ALPR cameras that log the movements of every vehicle that passes a camera and make that history searchable by law enforcement. By deeming the deputy’s month‑long pull of more than 50 location records an unconstitutional search, the court highlighted the tension between public‑safety technology and individual privacy rights.
Deputy Freddie Alaniz, who also served on a DEA task force, stopped a Mazda SUV with California plates on Interstate 44 in May and followed the vehicle. After the stop, he accessed Flock’s nationwide database and retrieved a month’s worth of travel history, showing the vehicle in more than 50 locations across several states. He used that information to justify a subsequent stop and a search of the driver, Melisa Kyle, 46, of Crane, Missouri.
During the search, officers discovered roughly 91 pounds of methamphetamine, marijuana and about $7,000 in cash. Kyle was charged with possessing methamphetamine with intent to distribute. Judge Hill, however, found that the constitutional violation occurred when the deputy reached into the historical location database, not when the vehicle was searched.
“The Fourth Amendment requires courts to draw a line when the cost is too great,” Hill wrote. She described the ALPR query as “unconstitutional” and called the technology a form of “indiscriminate mass surveillance” that “intruded on her reasonable expectation of privacy in the whole of her physical movements.” The judge warned that the nationwide Flock network was “approaching dragnet‑type law‑enforcement practice.”
Flock Safety was not a party to the case. A company spokesperson told reporters that the ruling “goes against the overwhelming weight of authority in similar cases across the country” and that the decision is limited to the facts of this case, with an appeal expected.
The decision arrives amid a broader national debate. Lawmakers from both parties have raised concerns about ALPR use. Senator Josh Hawley (R‑MO) recently held a subcommittee hearing on the technology, while Senators Bernie Sanders (I‑VT), Jeff Merkley (D‑OR) and Representative Alexandria Ocasio‑Cortez (D‑NY) introduced the Ban Flock Act, seeking to prohibit federal agencies from using ALPRs and to restrict funding for state and local deployments.
Legal scholars note that the case challenges the long‑standing principle that movements on public roads carry a reduced expectation of privacy. The Supreme Court’s 1983 decision in United States v. Knotts, which allowed limited use of plate‑reader data, did not anticipate a network that aggregates millions of scans and permits retroactive searches.
The ruling does not create binding precedent, but it adds to an emerging line of decisions that may force law‑enforcement agencies to obtain warrants before accessing historic ALPR data. Both the defense and civil‑rights groups are expected to monitor any appeal, and courts across the country are likely to face similar challenges as the technology becomes more ubiquitous.
