House explodes in River Falls; extent of injuries unknown A neighbor reported hearing a boom followed by their door blowing up, a report says. Author: Pixabay A house explosion left two people injured in River Falls, Wisconsin, on Monday evening, according to a release from the city. Authorities say the house exploded on the 400 block of River Hills Road, and two residents inside the home were helped out of the home by neighbors. One victim was transported by ambulance to Regions Hospital in St. Paul and the other was taken to River Falls Area Hospital for care. The extent of their injuries was not released by police.