According toClifford Edmund Bosworth,
"Hamadan is very old city. It may conceivably, but improbably, be
mentioned in cuneiform texts from ca. 1100 BC, the time of Assyrian King
Tiglath-pilesar I, but is certainly mentioned by Herodotus (i.98) who says that
the king of Media Diokes built the city of Agbatana or Ekbatana in the 7th
century BC."