Polinski is one of 15 charged in case that led to two teen deaths.
One of 15 people charged in an investigation into the synthetic drug deaths of two North Dakota teens is scheduled to plead guilty in federal court.
John Polinski is charged with conspiracy to distribute controlled substances resulting in serious bodily injury and death. He would be the last defendant convicted in the case known as "Operation Stolen Youth."
Polinski worked for a Houston company that allegedly supplied the chemicals to a Grand Forks man who cooked up the deadly hallucinogens.
Authorities say the drugs caused the June 2012 deaths of 18-year-old Christian Bjerk, of Grand Forks, and 17-year-old Elijah Stai, of Park Rapids, Minn.
The charge carries a maximum penalty of life in prison without parole.