Six of seven dead in fire were house students . Official : Six treated at hospital and released were also house students . Mayor Nick Cain said one of seven at house is related to owner of University of South Carolina . Victims ' names not being released until families are notified .
Six of seven dead in fire were University of South Carolina students . Official : Six treated at hospital and released were also USC students . Mayor Debbie Smith said one of 13 at house is related to owner of house . Victims ' names not being released until families are notified .