An infamous Pasco murderer was stabbed Tuesday at the state penitentiary in Walla Walla.
Prison officials said Pedro Mendez Reyna, 36, was stabbed eight times in the torso after he got in a fight in the dining hall with Javier Castillo, who is serving a sentence for first-degree murder. Castillo allegedly used a thin, sharpened piece of metal to stab Reyna.
Reyna was treated at St. Mary's Medical Center in Walla Walla and returned to the prison the same day.
He is serving a life sentence without parole for the Oct. 13, 1987, murders of five men and the attempted murder of another at Medina's Body Shop in Pasco.
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He allegedly was helped in the killings by his cousin, Vicente Mendez Ruiz, who is still at large.
Investigators believe Reyna and Ruiz fled to Colima, Mexico, after the shootings, but Reyna returned to the United States in 1993.
He was arrested in 1994 and pleaded guilty on May 6 that year to five counts of aggravated first-degree murder and one count of attempted murder.