Upon returning home, I was greeted with some additional information from Ausar. Velin'deras attacked Aspen, the Ausarium's caretaker. Aldrin and Azathiel were present, and it was reported that the feline Aldrin expressed strange behavior, including showing a familiarity towards Aspen despite not having met him before, and reportedly bringing up things in conversation that only the vampire Joziah could have known.
It's advised that this information be added to the current investigation, and the information has been brought to the council's attention as well - it's advised the knowledge contained in these reports be kept to the eyes of the guard and council only, lest the vampire threat be made aware that we might be uncovering a number of bits of information which could lead to their capture or destruction.
Chaplain Eastling, Temple's Head Guardian