It is believed that the fire which destroyed Persepolis started from Hadish Palace, which was the living quarters of Xerxes I, and spread to the rest of the city. It is not clear if the fire was an accident or a deliberate act of revenge for the burning of the Acropolis of Athens during the second Persian invasion of Greece. Many historians argue that, while Alexander's army celebrated with a symposium, they decided to take revenge against the Persians. If that is so, then the destruction of Persepolis could be both an accident and a case of revenge. The fire may also have had the political purpose of destroying an iconic symbol of the Persian monarchy that might have become a focus for Persian resistance.