2 Chronicles 24:23-25

23Now it happened at the end of the year, that the army of Aram (Syria) went up against Joash. They came to Judah and Jerusalem and killed all the leaders among the people and sent all their spoil to the king of Damascus.

24Though the army of the Arameans came with a small company of men, the Lord handed over a very large army into their hands, because Joash and Judah had abandoned (turned away from) the Lord, the God of their fathers. So the Arameans executed judgment against Joash.

25When they left Joash (for they left him very ill), his own servants conspired against him because of the blood of the son of Jehoiada the priest, and they murdered him on his bed. So he died, and they buried him in the City of David, but they did not bury him in the tombs of the kings.