One person was killed in a residential structure fire early Tuesday morning in Lake Andes. At approximately 3 AM, a residential structure fire on east Main Street was reported. One other adult escaped the fire but was airlifted to Sioux Falls after suffering smoke inhalation. Names of those involved have not been released pending notification of family members. The Charles Mix County Sheriff’s Office, Lake Andes Fire Department, South Dakota Division of Criminal Investigation, South Dakota Fire Marshal, and ATF are investigating.