Buffet subsequently murdered them .
In 1971 , two convicts , Claude Buffet and Roger Bontems , took as hostages a nurse , Nicole Comte , and a prison guard , Guy Girardot .
Buffet subsequently murdered convicts .
In 1971 , two convicts , Claude Buffet and Roger Bontems , took as hostages a nurse , Nicole Comte , and a prison guard , Guy Girardot .