msnbc.com staff and news service reports updated 5:32 p.m. CT, Sun., Feb. 14, 2010

The scientist who is accused of killing three colleagues at the University of Alabama had been a key suspect in an attempted bomb plot at Harvard in 1993, police officials told The Boston Globe on Sunday.

Authorities questioned Amy Bishop and her husband, James Anderson, in March 1993 after a bomb-laden package was delivered to a Harvard professor and doctor at Boston's Children's Hospital, the Globe reported.