2 Kings 12:18-22

So Jehoash king of Judah took all the sacred offerings that Jehoshaphat, Jehoram, and Ahaziah, his fathers, kings of Judah, had consecrated, and his own sacred offerings, and all the gold that was found among the treasuries of the house of the Lord and of the king’s house, and sent them to Hazael king of Aram. Then he withdrew from Jerusalem. Joash (Jehoash) Succeeded by Amaziah in Judah

Now as for the rest of the acts of Joash and everything that he did, are they not written in the Book of the Chronicles of the Kings of Judah?

And his servants rose up and formed a conspiracy; and they struck and killed Joash at the house of Millo as he was going down to Silla.

For Jozacar the son of Shimeath and Jehozabad the son of Shomer, his servants, struck him and he died; and they buried him with his fathers in the city of David, and his son Amaziah became king in his place.