Investigators will look at weather conditions . 100 people plan to search through the night for the third person , state police say . Comment: Two members of the University of Richmond women 's basketball program were among those aboard . Balloon hit a power line , state police spokeswoman says .
Investigators will look at weather conditions . 100 people plan to search through the night for the third person , state police say . Comment: Balloon hit a power line , state police spokeswoman says .