Amy Bishop, who's accused of fatally shooting three people at the University of Alabama-Huntsville when she was a professor there, has plead not guilty by reason of mental defect.
Bishop, a neuroscientist, allegedly shot six of her colleagues, killing three in a faculty meeting last February. The meeting occurred after the university denied her tenure. After the shooting, authorities also charged Bishop with killing her brother in 1986 — his death had initially been ruled accidental. After a plea hearing today, her lawyer told Reuters that "Her mind is a major issue." He also previously told press that she was paranoid.