What was the nationality of the athletes killed at the 1972 Munich Olympics?

The 1972 Summer Olympics officially known as the Games of the XX Olympiad, was an international multi-sport event held in Munich, West Germany, from August 26 to September 11, 1972.

The Games were largely overshadowed by what has come to be known as the "Munich massacre". Just before dawn on September 5, a group of eight members of the Black September Palestinian terrorist organization broke into the Olympic Village and took eleven Israeli athletes, coaches and officials hostage in their apartments. Two of the hostages who resisted were killed in the first moments of the break-in; the subsequent standoff in the Olympic Village lasted for almost 18 hours.

Late in the evening of September 5 that same day, the terrorists and their nine remaining hostages were transferred by helicopter to the military airport of Fürstenfeldbruck, ostensibly to board a plane bound for an undetermined Arab country. The German authorities planned to ambush them there, but underestimated the numbers of their opposition and were thus undermanned. During a botched rescue attempt, all of the Israeli hostages were killed. Four of them were shot, then incinerated when one of the terrorists detonated a grenade inside the helicopter in which the hostages were sitting. The five remaining hostages were then machine-gunned to death.