Cara Delevingne’s $7 million Los Angeles mansion was set ablaze in late March, and the case as to what happened has finally been closed. The 31-year-old model and movie star’s home was damaged by the fire, with pictures showing the roof severely damaged. So much so, that the kitchen and bedrooms were visible from above. It was thought an electrical fault had caused the fire at the time. Cause of Cara Delevingne’s house fire ‘undetermined’ Despite the Los Angeles Fire Department’s best efforts to determine the cause of the fire, they’ve officially ruled the cause ‘undetermined’, as per TMZ. The…