The hijacking of Lufthansa Flight 615 was an act of Palestinian terrorism that occurred on 29 October 1972 and aimed at the liberation of the three surviving perpetrators of the Munich massacre from a West German prison. For its actions, the West German government was criticised by Israel and other parties. Allegations were made that the hijacking had been staged or at least tolerated with theories of a secret agreement between the German government and Black September – release of the surviving terrorists in exchange for assurances of no further attacks on Germany.