Pada tanggal 14 Oktober 2019, Kepolisian Seongnam Sujeong melaporkan bahwa Sulli ditemukan meninggal oleh manajernya di rumahnya di Sujeong-gu, Seongnam-si sekitar pukul 15:21 [[Waktu Standar Korea|WSK]].<ref>{{cite web|title=Sulli Meninggal Dunia Pada 14 Oktober 2019|url=httphttps://m.liputan6.com/showbiz/read/4085890/sulli-eks-fx-meninggal-dunia|accessdate=14 Oktober 2019|work=[[Liputan6.com]]}}</ref><ref name="death">{{cite news|url=http://www.koreaherald.com/view.php?ud=20191014000871|title=Singer and actor Sulli found dead|date=October 14, 2019|accessdate=October 14, 2019|work=Korea Herald|archive-url=https://web.archive.org/web/20191014092115/http://www.koreaherald.com/view.php?ud=20191014000871|archive-date=October 14, 2019|url-status=live}}</ref><ref>{{cite web|url=https://entertain.naver.com/read?oid=076&aid=0003481064|title=14일 숨진 채 발견 "평소 우울증"…경찰 "극단적 선택 추정"|date=October 14, 2019|language=Korea}}</ref><ref>{{cite news |last1=Chae |first1=Hye-seon |title=[속보] 경찰 "설리, 성남 자택서 사망…매니저가 발견" |url=https://joongang.joins.com/23603387.html#home |accessdate=October 14, 2019 |work=JoongAng |date=October 14, 2019 |language=Korea}}</ref>