The sponsor of a bill that would have required law enforcement agencies in Arizona to get search warrants before using unmanned aircraft to gather evidence says he's amending the bill to instead create a study committee on drone use.

The decision by Republican Rep. Tom Forese of Chandler comes after law enforcement voiced opposition to the bill at a committee hearing last month.

Forese says the committee will look at privacy issues created by the potential use of drones as well as the economic development potential of the new technology. He says more information is needed to create balance between legitimate privacy concerns and business and government interests in using drones.

Forese says he'll amend the bill on the House floor Thursday.