Divrey Hayamim Bais 25:27-28

Orthodox Jewish Bible

²⁷ Now after the time that Amatzyah did turn away from following Hashem they made a kesher against him in Yerushalayim; and he fled to Lachish, but they sent to Lachish after him, and slaughtered him there.

²⁸ And they brought him upon susim, and buried him with Avotav in Ir Yehudah.