History of the Peloponnesian War

This same man, pretending to have a quarrel which he had not yet avowed, and offering service to the chief men amongst them, had induced the Delians, who had settled at Atramyttium, when driven from their homes by the Athenians for the purpose of purifying Delos, to go out as though on terms of friendship and alliance with him; and then, having watched when they were at dinner, had surrounded them with his own troops, and shot them down.

Since therefore they were afraid, on account of this deed, that he might some time or other commit some outrage on themselves too, and since he also imposed upon them burdens which they could not bear, they expelled his garrison from their citadel.