A Terre Haute man has been arrested for what may have been revenge killings at Creighton University in Omaha, Nebraska.
40-year-old Dr. Anthony Garcia was arrested Monday in Illinois.
Out of the four people killed, 65-year-old Roger Brumback and 65-year-old Mary Brumback were killed in May.
The other two people, 11-year-old Thomas Hunter and his family housekeeper, 57-year-old Shirlee Sherman were killed in 2008.
Police say that Roger Brumback and Thomas Hunter's father worked in Creighton's pathology department and that Brumback and Hunter fired Garcia in 2001 when he was a pathology resident for erratic behavior.