Thereupon Artabazus laid siege to Potidaea, and suspecting that Olynthus too was plotting revolt from the king, he laid siege to it also. This town was held by Bottiaeans who had been driven from the Thermaic gulf by the Macedonians. Having besieged and taken Olynthus, he brought these men to a lake and there cut their throats and delivered their city over to the charge of Critobulus of Torone and the Chalcidian people. It was in this way that the Chalcidians gained possession of Olynthus.