History of the Peloponnesian War

When this holiday was come, Hippias was gone out of the city into the place called Cerameicum with his guard of halberdiers, and was ordering the procession how it was to go. And Harmodius and Aristogeiton, with each of them a dagger, proceeded to the fact.

But when they saw one of the conspirators familiarly talking with Hippias (for Hippias was very affable to all men), they were afraid and believed that they were discovered and must presently have been apprehended.

They resolved therefore (if it were possible) to be revenged first upon him that had done them the wrong, and for whose sake they had undergone all this danger, and, furnished as they were, ran [furiously] into the city, and finding Hipparchus at a place called Leocorium, without all regard of themselves fell upon him, and with all the anger in the world, one upon jealousy, the other upon disgrace, struck and slew him.

Aristogeiton, for the present, by means of the great confluence of people, escaped through the guard, but taken afterwards, was ungently handled; but Harmodius was slain upon the place.