The collapsed structure of a nightclub in Gwangju

The collapsed structure of a nightclub where several athletes competing at the World Aquatics Championships were dancing is pictured in Gwangju, South Korea, on Saturday, July 27, 2019.

Four U.S. water polo players were among 17 people injured in a tragic nightclub incident in South Korea that left two people dead, according to local reports.

The players were on the second floor of the Coyote Ugly nightclub celebrating the women’s team’s triumph in the FINA World Championship title game on Friday, their third straight world title.

The second floor, which reportedly had about 100 people on it, collapsed onto the first floor around 2:30 a.m. local time.

According to CNN, two of the women’s team players were among the injured — Kaleigh Gilchrist suffered a “deep” cut to her leg and needed surgery, while Paige Hauschild required stitches in her arm. Johnny Hooper and Ben Hallock of the men’s team also required minor treatment.

The casualties were both South Korean.

“Players from our men’s and women’s teams were celebrating the women’s world championship victory when the collapse occurred,” said Christopher Ramsey, CEO of USA Water Polo. “Our hearts go out to the victims and their families.”

A New Zealand water polo player, Matt Small, told a radio station in his home country that he was on the second floor when it happened.

“We were just dancing and then the next minute we dropped,” said Small. “We ... fell on top of the heads of other people that were beneath us ... Some of them were pretty dire cases.”