Never heard anything more on following cases:
-fuse and other bomb materials in a bus locker
-who killed the woman from the Tennessee driver's license agency who was caught selling legit IDs to middle eastern men from NYC/NJ knowing that they were fictional identities (the men were sentenced to time served and released to be deported)
-who put the bomb around the pizza delivery guy's neck
and the biggie:
-who mailed the anthrax letters
Quite a list isn't it?