Brujah Slaughtered

little is known of what caused this to happen but what is known is that at least a dozen Brujah have been slaughtered, their throats torn out bodies ripped in half. their hands, eyes ears and tongues have all been removed, Many of them had been turned to ash, Only one survived if you'd call it that, they were staked had their eyes torn out and their tongue ripped out both hands had been sliced off.  ( Anyone using Necromancy, Auspex, or Thaumaturgy to identify the killer would find only a figure cloaked in a shroud of blackness, wearing a pure silver mask, moving at a nearly impossible speed before their sight would fade ) A single large sabbat symbol was found instantly as it was painted on a wall in the blood of their victims