Earlier this month, Schwartz’s family in Bnei Brak reported him missing when he failed to return home after visiting his father’s grave with his son, Ronni, in southern Israel.
His car was found abandoned near the Gaza Strip, raising fears that Islamic militants may have seized him.
Schwartz was found Sept. 12 in an abandoned building in Ashkelon.
Police began questioning him when they found discrepancies between his description of events and testimony gathered from witnesses.