A fire investigation into the massive blaze at Helix Apartments earlier this month was unable to determine what started it. The latest update from the St. Louis Park Fire Department was issued on Thursday, announcing that it had completed its origin-and-cause fire investigation into Helix Apartments. RELATED: Fire at Helix Apartments in St. Louis Park injures 1, displaces multiple residentsOn July 17, the building erupted in flames, injuring one person and displacing many others. The written investigation report will be available on the city’s website next month. You can read the origin-and-cause investigation report below: