UPDATE: The INITIAL shots fired REPORT is a smash and grab robbery w/ hammers at Ben Bridge Jewelers in Tyler Mall per sources
NEW: Ironic? Biz manager for Alanis Morissette, other celebs, sports figs agrees to plead guilty to embezzling $6.5 million from clients.
3 explosive devices recovered from scenes. "There have had to have been some degree of planning" Chief said of shooting.
BRK: Sources tell @NBCInvestigates suspect is dead at pursuit termination location after officer-involved shooting involving West Covina PD.
NEW: FBI searched California house of man authorities believe originally bought the assault rifles used in San Bernardino shooting rampage