SIOUX FALLS, S.D. (KELO) -- A house explosion in Deuel County is being investigated by authorities. The Deuel County Sheriff's Office says crews were called to the 800 block of Lac Qui Parle St. in Gary just before 10:30 Monday morning for a house explosion. Police: Active shooter situation at WHS not credible Authorities say two people were inside the home at the time of the explosion. One victim is in critical condition, and the other victim has life-threatening injuries. Photo courtesy: Deuel County Sheriff's Office The Gary Fire Dept., Deuel County Ambulance, Canby Ambulance, Deuel County Sheriff’s Office, South Dakota Highway Patrol, South Dakota DCI, South Dakota Fire Marshall’s Office and ATF all responded to the scene.