What does 2 Chronicles 22:8 mean?

While Jehu was carrying out God's judgment on Ahab's family, he found the leaders of Judah and Ahaziah's relatives, who were serving Ahaziah, and killed them. 2 Chronicles 22:8 - Modern Text Bible

(Jehu kills not just Ahab's family, but also Ahaziah's officials and relatives, extending the judgment to Judah's leadership.)