Engine & Chief 22 responded on Box 1120 in Holly Oak Manor for a reported Structure Fire with Hazardous Materials incident. New Castle County Police were called to check on the welfare of the occupants and found that there had been a fire in the home and reported two fatalities. New Castle County Hazardous Materials Team & DNREC were called to the scene for air monitoring. The incident is under investigation by the Delaware State Fire Marshall’s Office & New Castle County Police. Deputy Chief 11 had the Brandywine Hundred Command.