Darius fled northwards from Ecbatana upon his approach.
At Ecbatana new masses of treasure were seized, but when once the necessary measures which its disposal and the occupation of the Median capital entailed were taken, Alexander continued the pursuit.
At Ecbatana the death of Hephaestion for a time plunged Alexander into a passion of mourning.
As a residence, however, for the rulers of the empire, a remote place in a difficult alpine region was far from convenient, and the real capitals were Susa, Babylon and Ecbatana.
Both in Persepolis and Pasargadae large masses of gold and silver from the tribute of the subject nations were treasured, as in Susa and Ecbatana.