According to Jordan Fischer of The Indy Channel, the 68-year-old woman allegedly stalked and left threatening messages for Stewart and his family for more than a year due to Stewart declining to give her an autograph at a race.
Russell allegedly placed 333 phone calls to Stewart, Stewart's mother and Stewart's sister from March 2016 until October 2017.
In a probable cause affidavit, it was written that Russell allegedly placed an anonymous phone call falsely saying that a plane occupied by Stewart was carrying narcotics.
Also, Russell allegedly sent an envelope containing white powder to Indianapolis law firm Ice Miller LLP in September after receiving a notice that she had violated a protective order against Stewart's mother.
The substance turned out to be baking soda.
The 46-year-old Stewart retired from full-time racing in NASCAR's Cup Series at the conclusion of the 2016 season.
He has 49 career wins and three championships to his credit, likely making him a first-ballot Hall of Fame selection.
Stewart is currently the co-owner of Stewart-Haas Racing in the Cup Series.