Quoting Commentary for I Chronicles 10:10

וַיָּשִׂ֙ימוּ֙ אֶת־כֵּלָ֔יו בֵּ֖ית אֱלֹהֵיהֶ֑ם וְאֶת־גֻּלְגָּלְתּ֥וֹ תָקְע֖וּ בֵּ֥ית דָּגֽוֹן׃ (ס)

And they put his armour in the house of their gods, and fastened his head in the house of Dagon.