MADISON, Wis. (AP) — Law enforcement agencies in Wisconsin cannot use drones unless they have a search warrant or a legitimate reason, according to a new bill announced Thursday by a bipartisan group of lawmakers.

The proposal, authored by Rep. Tyler August, R-Lake Geneva, would require law enforcement to obtain a warrant before using unmanned aircraft equipped with video or audio recording devices as part of criminal investigations. Evidence will not be allowed if obtained illegally.