At least three people were hurt in a 35-foot fall Sunday when a balcony in Philadelphia's Rittenhouse Square collapsed, authorities said. Several people were trapped when the structure collapsed at a Center City building in the 200 block of South 22nd Street, WCAU-TV, Philadelphia, reported. Three victims were being treated at area hospitals, the TV station said. The Philadelphia Department of Licenses and Inspections was called to begin an investigation.