1 Samuel 31:8-9

8The day after the battle, the Philistines came to take all the valuable things from the dead soldiers. They found the dead bodies of Saul and his three sons on Gilboa mountain.

9They cut off Saul's head and they removed his armour. Then they sent men through all the country of the Philistines with the news of Saul's death. These men told the news everywhere that the Philistine people lived and in the temples of their idols.