The Oregon Senate has approved a bill that would require law enforcement in Oregon - except the military - to acquire warrants before using drones to investigate a person.

Sen. Jeff Kruse (R-Roseburg) said the proposed law allows for use of unmanned aircraft by those agencies if they have registered the drones with a state board, if they have received the proper court authority for investigations or if they are responding to an emergency, like a forest fire or a lost child. 

The bill has broad bipartisan support. But Sen. Betsy Johnson (D-Scappoose) said she could not support the bill after talking with an attorney who specialized in aviation law. She has concerns some limitations within the legislation could conflict with federal policies. 

The bill must go back to the House for concurrence in Senate amendments before it is sent to the governor for final approval.