PARIS (AP) — Three German swimmers became ill after competing in the open water races at the Paris Olympics, though it was not immediately clear if the long-polluted Seine River was responsible for their sickness.

The swimmers were not identified in a statement released Saturday by the German Olympic Sports Confederation, though Leonie Beck went on social media to reveal her condition. All three swimmers have recovered and expect to travel home as planned.

Beck, who finished ninth in the 10-kilometer event, posted a picture of herself on Instagram…