It what seems to be one of the strangest twists yet in the continuing saga of Alabama professor Amy Bishop, court documents reveal another murder plot in her past. In 1993, documents recently released stated, Amy Bishop and her husband were questioned in the attempted mail bombing of Dr. Paul Rosenberg.

Dr. Rosenberg apparently wrote a letter that criticized Amy Bishop. Her husband stated that he wanted revenge for the injustice done to his wife. He has been quoted as saying he wanted to kill, bomb or stab the doctor for giving her such a poor review.

While no charges were filed against the couple in 1993, they were interviewed on two occasions and were considered persons of interest. Since the shootings that occurred on campus less than two weeks ago, several disturbing items have turned up in Amy Bishop’s past. At the age of 21 she fatally killed her 18 year old brother in what was determined an accidental shooting. In 1993 she was a suspect in the mail bomb plot stated above. In 2002 she was in an altercation with a mother at a restaurant over a booster seat. And finally, she is currently sitting in jail on capital murder charges for killing 3 colleagues.