2 Chronicles 24:25-26

25And when the Arameans had withdrawn, they left Joash severely wounded. His own servants conspired against him for shedding the blood of the son1 of Jehoiada the priest, and they killed him on his bed. So he died and was buried in the City of David, but not in the tombs of the kings. 26Those who conspired against Joash were Zabad2 son of Shimeath the Ammonitess and Jehozabad son of Shimrith3 the Moabitess.