An analyst and assistant coach with the Canadian women’s soccer team have been sent home from the Olympics after New Zealand Football lodged a complaint about a drone being flown over the women’s team’s training session at Saint-Etienne, presumably spying on the team ahead of the Canada-New Zealand matchup on July 25.

While instances of doping have sadly become commonplace at the Olympics, other cheating instances by athletes and their coaches are rarer. Here’s a look at some earlier Olympic cheating scandals (that we know about).