II Kings 19:36-37

So Sennacherib king of Assyria departed and went away, returned home, and remained at Nineveh. Now it came to pass, as he was worshiping in the temple of Nisroch his god, that his sons Adrammelech and Sharezer struck him down with the sword; and they escaped into the land of Ararat. Then Esarhaddon his son reigned in his place.