SAN JOSE, Calif. - Santa Clara County Sheriff's detective, along with agents from the ATF and FBI, on Thursday started their first full day of investigating why a 57-year-old VTA employee would storm into a morning meeting and kill nine of his co-workers before killing himself in the most horrific mass shooting in the Bay Area in recent memory.
The investigation will take time because the VTA light rail yard on Younger Avenue is so large and because gunman Sam James Cassidy killed his co-workers in two large areas of the yard, according to the sheriff's officeIn addition, the investigation stalled for a while as a bomb-sniffing dog picked up the scent of something suspicious.