 One account states that Ariobarzanes was killed in the last charge while another version by Arrian reports that Ariobarzanes escaped to the north where he finally surrendered to Alexander with his companions.Modern Historian J. Prevas maintains that Ariobarzanes and his forces retreated to Persepolis, where they found the city gates closed by Tiridates, a Persian noble and guardian of the royal treasury under Darius III, who had been in secret contact with Alexander the Great.Tiridates realized the futility of trying to resist Alexander's forces, and so allowed Alexander to massacre Ariobarzanes and his troops right outside the city walls of Persepolis rather than fight against Alexander.