The United States Court of Appeals for the Sixth Circuit ruled Tuesday that police can use cell phone data obtained without a warrant to establish an individual’s location.

The case, United States v. Skinner, involved a suspected drug trafficker, Melvin Skinner, who was tracked and arrested by the Drug Enforcement Administration (DEA).

‘The drug runners in this case used pay-as-you-go (and thus presumably more difficult to trace) cell phones to communicate during the cross country shipment of drugs,