The plane ― a Pilatus PC-12 ― had reportedly been traveling in “blizzard-like” conditions when the deadly accident occurred.
There was a total of twelve people on the plane.
Rossow said in a statement that the pilot and eight passengers died in the accident.
The three survivors were transported to hospitals in Sioux Falls, South Dakota, for treatment. All three were in critical condition, said Michael Geheren, a reporter with local station KELO-TV.
The National Weather Service had warned of winter storm conditions and poor visibility in Chamberlain and other parts of South Dakota this weekend.
Rossow said “heroic” law enforcement personnel and first responders had braved “extreme weather conditions” to rescue the crash victims.
Geheren noted that it had been difficult to get photos or video of the crash site due to the rough weather.
The network added that the Federal Aviation Administration and National Transportation Safety Board had launched probes into the accident.