California officials say six prison guards were hurt in an attack Thursday by an inmate at a maximum-security lockup.
The inmate, Douglas Compton, refused orders to leave an out-of-bounds area of a yard at Calipatria State Prison in Imperial County, prison officials said.
When three guards approached him, authorities say, Compton stabbed one in the head and face with a homemade weapon. He also allegedly punched two other officers.
Guards used batons, pepper spray and fired a rifle shot to stop the attack.
Compton was treated for facial cuts and moved to another prison. Five correctional officers and a sergeant were treated for cuts, slashes and sprains and released.