2 Chronicles 22:8-10

81And it came about, when Jehu was executing judgment on the house of Ahab, that he found the princes of Judah and the sons of Ahaziah’s brothers attending to Ahaziah, and killed them. 92He also searched for Ahaziah, and they caught him while he was hiding in Samaria; they brought him to Jehu, put him to death, 3and buried him. For they said, “He is the son of Jehoshaphat, 4who sought the Lord with all his heart.” So there was no one of the house of Ahaziah to retain the power of the kingdom.

105Now when Athaliah the mother of Ahaziah saw that her son was dead, she rose and eliminated all the royal 6children of the house of Judah.