 Brain dead on Tuesday evening after he was attacked by a 16-year-old boy who had just returned from the dorms after an outdoor recreation time. Investigators say the incident, which was captured on security cameras, may have been premeditated by the suspect who felt some staffers were treating him unfairly. A news release from the Department of Corrections says Pru was a dedicated and compassionate member of the team at Lincoln Hills who leaves behind a fiancé and a daughter.