On June 29, 2003, the deadliest porch collapse in United States history occurred in Chicago. An overloaded balcony collapsed during a party in an apartment building, killing thirteen people and seriously injuring fifty-seven others. The ensuing investigation was highly critical of the way the balcony was built, finding a large number of errors in its construction which ultimately resulted in the collapse. However, the building's owner continues to blame overcrowding on the balcony for its complete structural failure, although he has taken steps to strengthen the balconies at his properties to prevent a recurrence of the disaster.