A Mission man will serve more than nine years in prison for assaulting a Todd County man last November.

Matthew David Stymiest, 32, was sentenced by U.S. District Judge Charles Kornmann to 110 months in prison and three years supervised release. Stymiest assaulted a man near Soldier Creek on Rosebud Indian Reservation on Nov. 18, 2007. The victim suffered a traumatic brain injury.

Stymiest was convicted of assault resulting in serious bodily injury after a jury trial in June.

In other federal court news:

• Claudia Longman, 55, Martin, was sentenced by U.S. District Judge Karen Schreier to five years probation and ordered to pay $7,027 in restitution to the Social Security Administration. A jury convicted her on charges of supplemental social security income representative payee fraud, supplemental security income benefits fraud, theft of government property and false statement. Longman was accused of collecting SSI payments intended for the benefit of her grandson, who was in the care of the Children's Home Society at the time.
• Craig Dupris, 29, Cherry Creek, and Charles Dupris, 31, Eagle Butte, both pleaded guilty to distribution and possession with intent to distribute a controlled substance. According to a news release from the U.S. Attorney's Office, the charge involves cocaine distribution between Oct. 1, 2003, and Aug. 31, 2007. The maximum penalty is 20 years in prison and a $1 million fine. Both men were released on bond pending sentencing Jan. 12.
• Chad Hein, 27, Mission, pleaded guilty to count one of an indictment that charged him with conspiracy to distribute and possess with intent to distribute a controlled substance. Prosecutors say the charge involved a conspiracy to distribute methamphetamine between August 2006 and April 2007. The maximum penalty is 20 years in prison and a $1 million fine. Hein is in custody pending sentencing Dec. 15.
• Tobby Wright, 32, Box Elder, pleaded guilty to possession of an unregistered firearm. According to a news release from the U.S. Attorney's Office, Wright admitted to possessing a 12-gauge sawed-off shotgun that was not registered to him in the National Firearms Registration and Transfer Record. The maximum penalty is 10 years in prison and a $250,000 fine. Wright is in custody pending sentencing Dec. 9.
• Cornelius Last Horse, 37, Kyle, pleaded guilty to a charge of abusive sexual contact. According to a news release from the U.S. Attorney's Office, Last Horse admitted to having sexual contact with a girl under 16 years old by putting her in fear of her safety. The maximum penalty is three years in prison and a $250,000 fine. He was originally indicted on additional counts of aggravated sexual abuse. Last Horse is in custody pending sentencing Nov. 18.
• Jade LaRoche, 28, Lower Brule, pleaded guilty to a charge of assaulting, resisting or impeding a federal office. According to federal court documents, LaRoche was stopped in Lower Brule by a Bureau of Indian Affairs officer for speeding and driving on the wrong side of the road. As the officer approached the driver's side of the car, LaRoche hit the accelerator and sped away. The incident happened May 14. The maximum penalty is one year in prison and a $10,000 fine. LaRoche is in custody pending sentencing.
• Morris Yellow, 59, Wakpala, pleaded not guilty to an indictment charging him with sexual abuse of a minor and abusive sexual contact. Federal court documents show he is accused of having sexual contact with a minor between 12 and 16 years old between 2004 and 2007 in Corson County. The maximum penalty upon conviction is 15 years in prison and a $250,000 fine, plus lifetime supervision. Yellow was released on bond pending trial.

The U.S. District Court generally prosecutes felonies committed on reservations, while tribal courts handle misdemeanor crimes. Felonies that happen off the reservation are prosecuted in state/circuit court and are reported separately in the Journal. Some drug and firearms cases are also prosecuted in federal court.