2 Kings 19:36-37

So Sancheriv king of Ashur left, went and returned to live in Ninveh.

One day, as he was worshipping in the temple of Nisrokh his god, [his sons] Adramelekh and Shar'etzer struck him with the sword and escaped into the land of Ararat. So his son Esar-Hadon took his place as king.