“Now the rest of the acts that King Joash did, his might, and how he fought with King Amaziah of Judah, are they not written in the Book of the Annals of the Kings of Israel? King Joash slept with his ancestors. He was buried in Samaria with the kings of Israel. Then his son King Jeroboam succeeded him.”
If you want more information about King Joash, then check with your lost “Book of the Annals of the Kings of Israel.” Like the other northern Israelite kings, he died and was buried in Samaria. His son became King Jeroboam II.