(CNN) As a crowded group of Clemson University students and local residents danced and jumped around at an apartment clubhouse late Saturday night, Jeremy Tester felt something strange beneath his feet.

"You could hear the floor about to go through, kind of," he said, "but nobody thought it was going to happen. They just kept going."

Suddenly, the floor gave way. Dozens of partiers dropped into free fall and landed in a mass of sprawling bodies in the basement.

Police said 30 people were injured when the floor of the apartment clubhouse collapsed during a party during homecoming weekend in Clemson, South Carolina.

No individuals were trapped during the collapse and no one suffered life-threatening injuries, Clemson Police Chief Jimmy Dixon told CNN affiliate WYFF. A total of 30 people were sent to three area hospitals with broken bones and lacerations.

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