Guezguez, 17, was laid to rest Monday in Ariana, Tunisia, after Asr prayer, the Tunisian Olympic Committee said on Facebook.
According to Olympics.com, Guezguez was sailing with her twin sister Sarra when their boat capsized due to strong winds. Sarra, who competed with Eya in Tokyo, survived the accident.
Last summer, Eya and Sarra Guezguez finished 21st in the 49er FX event at the Tokyo Olympics.
“May Allah have mercy on the deceased, grant her eternal rest in Paradise, and grant her family and relatives and the entire sports family patience and solace. We belong to Allah and to Him we shall return,” the Tunisian Olympic Committee said.
“I am shocked by the news of sailor Eya Guezguez’s death,” International Olympic Committee President Thomas Bach said. “She was an inspiring talent and role model for her athletes’ generation.
“Eya Guezguez’s participation at Tokyo 2020 alongside her twin sister Sarra will continue to motivate girls everywhere. Our thoughts are with her family, friends and the Olympic community in Tunisia.”
CNN has reached out to the Tunisian Olympic Committee for more information.