INDIANAPOLIS — Indiana State Police say a review of its investigation of a northern Indiana house fire that killed four young sisters has confirmed it was intentionally set.

State police said Wednesday that since the review by Indianapolis Fire Department confirmed the findings of state investigators, the criminal investigation by the state police will continue.

No arrests have been made in connection with the Nov. 21, 2016, fire in Flora that killed 11-year-old Keyana Davis, 9-year-old Keyara Phillips, 7-year-old Kerriele McDonald and 5-year-old Konnie Welch. The fire also injured their mother and two others.

State police Superintendent Doug Carter has denied a charge by the Indiana NAACP that detectives covered up their bungling of the investigation. The girls all were black.

The IFD review began in early December and concluded Jan. 25.