(Sioux Falls, SD) — Two Sioux Falls fires are under investigation. The first fire happened July 17 in the 200 block of North Grange Avenue and is being investigated as an arson. A 53-year-old woman died as a result of injuries suffered in the fire. The second blaze broke out Saturday morning in the 66-hundred block of West Pine Meadows Place. A 30-year-old man rescued from inside the home later died.