Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[21] "Now when Sennacherib was returning from his Egyptian war to Jerusalem, he found his army under Rabshakeh his general in danger [by a plague], for God had sent a pestilential distemper upon his army; and on the very first night of the siege, a hundred fourscore and five thousand, with their captains and generals, were destroyed. So the king was in a great dread and in a terrible agony at this calamity; and being in great fear for his whole army, he fled with the rest of his forces to his own kingdom, and to his city Nineveh; and when he had abode there a little while, he was treacherously assaulted, and died by the hands of his elder sons, ¹ Adrammelech and Seraser, and was slain in his own temple, which was called Araske. Now these sons of his were driven away on account of the murder of their father by the citizens, and went into Armenia, while Assarachoddas took the kingdom of Sennacherib." And this proved to be the conclusion of this Assyrian expedition against the people of Jerusalem.