Two adults were found dead in a semi-truck along Interstate 29 on Tuesday afternoon.
According to the South Dakota Division of Criminal Investigation, two adults were found dead in the cab of the semi-truck near mile marker 35 south of Beresford on Tuesday.
Autopsies on the two individuals have been completed, and the DCI is not looking for any suspects.
Authorities are still investigating the incident. The names of the deceased have not been released.