Lysimachus crossed over the Hellespont in 302 BC, intending to take advantage of Antigonus's absence in Syria by overrunning Asia Minor. The cities of Lampsakos and Parion submitted to him, but he had to storm Sigeion, after which he installed a garrison there. He then sent Prepelaus with 7,000 men to attack Aeolis and Ionia, while he besieged Abydos. This siege was unsuccessful however, since Demetrius sent the city reinforcements from Greece by sea. Lysimachus instead went on to win over Hellespontine Phrygia, and then captured the major administrative centre of Synnada. Meanwhile, Prepelaus captured Adramyttion, Ephesos, Teos, and Colophon; he could not however capture Erythrae or Clazomenae, again due to sea-borne reinforcements. Finally, Prepelaus moved inland and captured Sardis, another major administrative centre.