The complex is located on S.C. 93, about two miles away from Clemson University. Some of the students tried to jump to safety as the floor gave way. mostly to no avail.
Video posted on social media shows a large portion of a floor on the first level of the building caving in as people were dancing, causing dozens to fall through to the floor below. People were under other people. This party resulted in a collapse of the floor structure in front of the fireplace at the clubhouse.
Witness Raven Guerra, 20, who was at the party, told Good Morning America: 'By the time I had put one foot out the door, I felt that something was weird and that's when everyone just collapsed and the guy behind me disappeared.
The 30 people were transported to area hospitals after officials said Clemson University Fire set up a triage at the scene.
Police say none of the victims were trapped, and no one suffered life-threatening injuries. Some people standing on the sidelines pulled out their cellphones to record the floor collapse.
'It was a lot to take in'. I can tell you there was a floor collapse.
Police said they received a 911 call at 12:30 a.m. about the cave-in and ambulances were quickly dispatched to the area.
Police arrived at the Woodlands Apartments complex, where the incident occurred, soon thereafter.
"We're continuing to gather information, and are encouraged by the initial reports of no life-threatening injuries", Clemson University said in a statement to ABC.