The Histories · 8.127

So upon this Artabazos began to besiege Potidaia, and suspecting that the men of Olynthos also were intending revolt from the king, he began to besiege this city too, which was occupied by Bottiaians who had been driven away from the Thermaian gulf by the Macedonians. So when he had taken these men by siege, he brought them forth to a lake and slew them there; and the city he delivered to Critobulos of Torone to have in charge, and to the natives of Chalkidike; and thus it was that the Chalkidians got possession of Olynthos.

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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