Amy Bishop, a former Alabama university professor accused of gunning down three colleagues in February, was indicted in Massachusetts on Wednesday in the 1986 shooting death of her brother.
Bishop was charged with first-degree murder in the killing of her brother, Seth Bishop, Norfolk District Attorney William Keating said.
The death of Seth Bishop was originally ruled an accident. Then 20, Amy Bishop told investigators that she was asking her brother how to unload her father's shotgun when it accidentally discharged, shooting him in the chest in her parents' kitchen.
His death came under renewed scrutiny after Amy Bishop was arrested in February in connection with a shooting rampage at a biology faculty meeting at the University of Alabama-Huntsville.