Fire ravaged a beach house occupied by more than a dozen people, most of them college students, killing six early Sunday and sending several more to a hospital, authorities said. One person was still missing, Mayor Debbie Smith said Sunday afternoon. Six survivors were released after treatment; one had jumped from the burning house and into a waterway. Most of the people inside the house were students at the University of South Carolina, although Smith said one may have attended Clemson University. The house was being used by the owner's daughter and a group of her friends, the mayor said.