Prison officials in Pendleton say they're gradually easing up on a lockdown that followed a series of fights, and things may be close to normal by Friday.
Fighting broke out Monday night at dinnertime in the Eastern Oregon Correctional Institution, and 46 inmates were put in disciplinary segregation.
Two staff members suffered injuries. Miles said one's back at work and the other is waiting for a doctor's OK.
Spokesman Ron Miles told the East Oregonian that investigators haven't given a report on what caused the fighting.
He said Wednesday that half of the institution remained on full lockdown, but inmates in the eastern half were allowed to leave their cells for some activities, such as showers.
Visits were canceled for Thursday.