The German and Israeli presidents are to join relatives of the 11 Israeli athletes killed in the attack by Palestinian militants on the 1972 Munich Olympics to mark the 50th anniversary on Monday, days after an agreement that ended a long dispute over compensation.
Monday's ceremony takes place at the Fuerstenfeldbruck airfield outside Munich, the scene of a botched rescue attempt in which nine of the Israeli athletes, a West German police officer and five of the assailants were killed.
Last week's agreement headed off a threatened boycott of the anniversary event by relatives of the slain athletes. They will receive a total of 28 million euros (dollars) in compensation, a significant increase from the initial 10 million-euro offer.
As part of the agreement, Germany has agreed to acknowledge failures by authorities at the time and to allow German and Israeli historians to review the events surrounding the attack.