The Brief St. Louis Park Fire Department says the Helix Apartments fire started on a fourth-floor balcony on July 17. Fire officials have released their initial findings after investigating the Helix Apartments fire, but the exact cause remains undetermined. Fire department shares initial findings on Helix Apartments blazeWhat we know:The St. Louis Park Fire Department says the fire started on a balcony serving a fourth-floor apartment. The department explained that an undetermined cause simply means there was not enough evidence to point to a single explanation. The St. Louis Park Fire Department and the City of St. Louis Park say they have no further information to share at this time.