וַיַּנַּ֥ח אֶת־נִבְלָת֖וֹ בְּקִבְר֑וֹ וַיִּסְפְּד֥וּ עָלָ֖יו ה֥וֹי אָחִֽי׃
Er legte seinen Leichnam in sein Grab und stimmte die Klage an: O, mein Bruder!
Rashi
In his own grave. In the graveyard belonging to the false prophet in the city.10Alternatively, “in the grave that he had dug for himself.”—Metzudas Dovid