2 Chronicles 24:25-26

When 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. The conspirators against Joash were Zabad the son of Shimeath the Ammonitess, and Jehozabad the son of Shimrith the Moabitess.