A party thrown by a group of visiting Irish college students turned tragic early Tuesday when the fifth-floor balcony they were crammed onto collapsed, resulted in the death of six people and seven seriously injured, AP reported. Officials were working to figure out why the small balcony broke loose from the stucco apartment building a couple of blocks from the campus of the University of California, Berkeley. But one structural engineer said it may have been overloaded if, as city officials said, it was holding 13 people.