Coconino National Forest officials say a drone hindered efforts to fight a northern Arizona grass fire.
Forest officials say members of the public, news media, film and video production companies and others should never fly drones over or near a wildfire.
Officials say unauthorized drone flights can cause serious injury to firefighting personnel in the air and to firefighters and others on the ground.
The 228-acre grass fire was declared 100 percent contained Saturday. Several communications towers and a retired Forest Service fire guard station were threatened but not damaged.
The fire's cause is under investigation.