The 32-year-old inmate reportedly punched one of the officers in the head, and then struck the second officer when he tried to intervene.
The state Department of Corrections (DOC) and police are investigating an assault Tuesday at the Monroe Correctional Complex, in which an inmate injured two correctional officers.
The incident, which occurred around 9 a.m. , sent the officers to the hospital with non-life-threatening injuries, corrections officials said.
The inmate reportedly punched one of the officers in the head, and then struck the second officer when he tried to intervene, the department said. Both officers, one of whom received stitches, were expected to be released from the hospital Tuesday.
The inmate is serving a 17-year prison sentence that began in 2006 for first-degree burglary with sexual motivation out of Pierce County, according to the department.
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Because of the assaults, authorities put the Washington State Reformatory Unit on restricted movement. The unit houses more than 700 medium- and minimum-custody offenders and is one of five facilities that are a part of the Monroe complex.