At least 10 people have been taken to hospital following a shooting at a party near Arcadia Lake outside Oklahoma City, police said.
Witnesses described the scene as chaotic, with multiple men armed with rifles, and reported hearing up to 30 gunshots.
A heavy police presence was reported near Arcadia Lake Campground in Edmond, Oklahoma, following unconfirmed reports of shots fired.
Multiple law enforcement agencies responded to the scene, and authorities have not confirmed the number of victims, but multiple witnesses reported seeing between five and nine people injured.