WALLA WALLA -- A Washington state Corrections Department spokeswoman says four units of the Washington State Penitentiary remain on lockdown a day after three correctional officers were injured in an altercation with multiple inmates.
Spokeswoman Shari Hall said late Wednesday that preliminary reports indict Tuesday's assault was gang-related.
She says the three officers suffered "significant injuries." They have been released from a hospital and are recovering at home.
No inmates were seriously injured. Hall said earlier that nine inmates from the prison's West Complex were segregated after the incident.
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The West Complex is a close-custody unit that houses about 800 offenders, including the prison's gang units.