<sod >A hostage who died during a siege in a downtown Sydney cafe was killed when she was struck by fragments of a bullet fired from a police officer's gun as authorities stormed the cafe to end the 16-hour standoff, a lawyer told an inquest today.< eod>< sod > The court also heard that another hostage was killed when she was struck by fragments of a bullet fired from a police officer's gun as authorities stormed the cafe to end the 16-hour standoff.< eod>