SIOUX FALLS, S.D. (MITCHELLNOW)  The Sioux Falls Police Department is investigating a large, single-vehicle crash in Sioux Falls on Saturday morning that left two minors dead and five others injured.  According to authorities, at around 6 AM Saturday, emergency personnel responded to a crash at the intersection of East 18th Street and South 2nd Avenue.  A Dodge Durango SUV was traveling east and lost control, colliding with a tree and a house on the northeast corner.  Two juvenile occupants were found dead on the scene.  The remaining five juvenile occupants were transported to area hospitals with severe injuries.  Several occupants were reportedly not wearing seatbelts and vehicle speed appeared to be a contributing factor.  Due to the ages of the occupants, police did not provide further information on those involved.  The crash remains under investigation.