SIOUX FALLS (KELO AM) - The Sioux Falls Police Department received 17 calls of a loud explosion that caused houses to shake at around 12:27 a.m. Numerous officers throughout the city also reported hearing the sound.
A majority of the calls came from the area of 9th St. & Valley View Rd. The Sioux Falls Police Department and Sioux Falls Fire Rescue responded to the area but were not able to locate the source of the sound at this time.